@article {4925,
	title = {Hot atom reaction yields in Mu(*)+H-2 and T-*+H-2 from quasiclassical trajectory cross sections on the Liu-Siegbahn-Truhlar-Horowitz surface},
	journal = {Journal of Chemical Physics},
	volume = {112},
	number = {21},
	year = {2000},
	note = {ISI Document Delivery No.: 315YCTimes Cited: 7Cited Reference Count: 128},
	month = {Jun},
	pages = {9390-9403},
	type = {Review},
	abstract = {In order to provide an assessment of the "global" accuracy of the Liu-Siegbahn-Truhlar-Horowitz (LSTH) potential surface for H-3, hot atom reaction yields, which are determined from collision processes over an energy range much wider than that of single-collision experiments, have been calculated for the Mu*+H-2 and T*+H-2 systems. The isotopic comparison of muonium (Mu=mu(+)e(-)), an ultralight isotope of hydrogen (m(Mu)/m(H)approximate to 1/9), with the heaviest H-atom isotope, tritium, is a novel approach in testing the global accuracy of the H-3 surface. These reaction yields have been calculated using a formalism developed for (mu(+)) charge exchange, with input cross sections for elastic, inelastic (rovibrational excitation) and reactive collisions determined from quasi classical trajectories on the LSTH surface, in the center-of-mass energy range 0.5-11 eV. The rate of energy loss of the hot atom (Mu* or T*) due to elastic and inelastic collisions with the moderator (H-2) drastically affects the hot atom reaction yield. In particular, the forwardness of the angular differential cross section for the elastic process plays a crucial role in determining the stopping power for hot atoms. Good agreement is obtained in the absolute yields for both Mu(*)+H-2 and T-*+H-2, for the first time from microscopic cross sections, demonstrating that the LSTH surface remains surprisingly accurate over a wide range of energy and isotopic mass. (C) 2000 American Institute of Physics. [S0021- 9606(00)01920-6].},
	keywords = {CHARGE-EXCHANGE, COLLISIONS, GAS-PHASE, H+D-2->HD+D REACTION, Kinetic isotope, POTENTIAL-ENERGY SURFACE, QUANTUM-STATE DISTRIBUTIONS, RATE CONSTANTS, SHOCK TUBE TECHNIQUE, TEMPERATURE-RANGE, ZERO-POINT ENERGIES},
	isbn = {0021-9606},
	url = {<Go to ISI>://000087139700023},
	author = {Senba, M. and Fleming, Donald G. and Arseneau, D. J. and Mayne, H. R.}
}
@article {4897,
	title = {Measurements of Mu+NO termolecular kinetics up to 520 bar: isotope effects and the Troe theory},
	journal = {Physical Chemistry Chemical Physics},
	volume = {2},
	number = {4},
	year = {2000},
	note = {ISI Document Delivery No.: 281JDTimes Cited: 3Cited Reference Count: 58},
	pages = {621-629},
	type = {Article},
	abstract = {The recombination reaction Mu + NO + MMuNO + M (M = He, N-2, CH4) has been studied by the muon spin relaxation/rotation (mu SR) technique up to 520 bar at room temperature. The reaction remains in the low pressure regime throughout. The measured termolecular addition rate constant in N-2, 8.8 +/- 0.3 x 10(-33) cm(6) s(-1), is essentially the same as that found in our earlier study at pressures below 60 bar [J. J. Pan et al., J. Phys. Chem., 1995, 99, 17160]. It is somewhat smaller in He, 7.7 +/- 1.0 x 10(-33), but larger in CH4, 12.8 +/- 2.0 x 10(-33). The Mu + NO reaction is about five times slower than the corresponding H + NO reaction. The strong collision limits of the rate constants for three H-isotopes (Mu, H, D) reacting with NO have been estimated with Troe{\textquoteright}s formalism for unimolecular dissociation in the low pressure regime, based on the ab initio potential energy surface of Guadagnini et al. [J. Chem. Phys., 1995, 102, 774]. The Troe calculations give less than satisfactory agreement with experiment with the corresponding weak collision factor, beta(c), higher than expected by a factor of similar to 2 for H + NO. The calculated kinetic isotope effect in the strong collision limit for Mu/H is weaker than the measured effect by a factor of two giving an apparent large isotope effect in this factor, beta(c)(Mu) approximate to 1/2,beta(o)(H), possibly due to mode specific collisional stabilization.},
	keywords = {COLLISIONAL ENERGY-TRANSFER, DISSOCIATION, ELECTRON-SPIN EXCHANGE, GAS-PHASE, HIGH-PRESSURES, HNO, muonium, RATE CONSTANTS, relaxation, THERMAL UNIMOLECULAR REACTIONS},
	isbn = {1463-9076},
	url = {<Go to ISI>://000085154400025},
	author = {Pan, J. J. and Arseneau, D. J. and Senba, M. and Fleming, Donald G. and Himmer, U. and Suzuki, Y.}
}
@article {4096,
	title = {Reaction kinetics of muonium with N2O in the gas phase},
	journal = {Journal of Physical Chemistry A},
	volume = {101},
	number = {45},
	year = {1997},
	note = {ISI Document Delivery No.: YF251Times Cited: 6Cited Reference Count: 64},
	month = {Nov},
	pages = {8470-8479},
	type = {Article},
	abstract = {The thermal reaction Mu + N2O has been studied by the muon spin rotation (mu SR) technique at temperatures from 303 to 593 K and pressures up to 60 atm. The overall reaction rate coefficient depends on the N2O pressure quadratically in pure N2O and is proportional to both the N2O partial pressure and the total pressure in mixtures, confirming the theoretical prediction of Diau and Lin that the analogous H atom reaction proceeds through two channels in this temperature range, forming different products, MuN(2)O and MuO + N-2. The measured total rate coefficients are much larger than those reported by Marshall et al. for H(D) + N2O, indicating a dramatic kinetic isotope effect, which is mainly due to the enhanced quantum tunneling of the ultralight Mu atom. Even at room temperature (and low pressure), k(Mu)/k(H) approximate to 120, the largest yet seen in comparisons of gas-phase Mu and H reactivity at such relatively high temperatures. The addition reaction forming MuN(2)O (and by implication, HN2O) contributes significantly to the total reaction rate at higher pressures but with the thermal rate coefficient remaining in the termolecular regime even at the highest pressures measured.},
	keywords = {ADDITION-REACTIONS, CHARGE-EXCHANGE, CHEMICAL-REACTION, H-ATOMS, HIGH-TEMPERATURE PHOTOCHEMISTRY, HYDROGEN-ATOMS, radicals, RATE CONSTANTS, SHOCK-TUBE, SPIN RELAXATION},
	isbn = {1089-5639},
	url = {<Go to ISI>://A1997YF25100014},
	author = {Pan, J. J. and Arseneau, D. J. and Senba, M. and Shelly, M. and Fleming, Donald G.}
}
@article {3650,
	title = {Addition kinetics and spin exchange in the gas phase reaction of the ethyl radical with oxygen},
	journal = {Journal of Physical Chemistry},
	volume = {100},
	number = {16},
	year = {1996},
	note = {ISI Document Delivery No.: UF879Times Cited: 21Cited Reference Count: 58},
	month = {Apr},
	pages = {6561-6571},
	type = {Article},
	abstract = {The kinetics of the addition reaction of O-2 to the ethyl radical has been investigated as a function of temperature (259-425 K) and pressure (1.5-60 bar) using the muon spin relaxation technique in longitudinal magnetic fields. Within this temperature range at 1.5 bar, the chemical reaction is represented by an Arrhenius rate law with an activation energy of -4.4(4) kJ mol(-1) and an apparent frequency factor of 1.3(2) x 10(-12) cm(3) molecule(-1) s(-1). The high-pressure limit of the rate constant at 294 K amounts to k(ch)(infinity) = 8.7(8) x 10(-12) cm(3) molecule(-1) s(-1). Within error, this limit has been reached at 1.5 bar. The rate coefficient for spin exchange, k(ex) = 2.8(2) x 10(-10) cm(3) molecule(-1) s(-1), is collision controlled. The results for k(ch) agree well with experimental literature values, but the temperature dependence is more pronounced than that predicted on the basis of a RRKM extrapolation from low-pressure data. The theoretical basis for the analysis of experimental data is given, and the results are discussed.},
	keywords = {DEPENDENCE, DYNAMICS, LIQUIDS, muonium, O-2, PARAMETERS, RANGE, RATE CONSTANTS, relaxation, SPECTRA},
	isbn = {0022-3654},
	url = {<Go to ISI>://A1996UF87900032},
	author = {Dilger, H. and Schwager, M. and Tregennapiggott, P. L. W. and Roduner, E. and Reid, I. D. and Arseneau, D. J. and Pan, J. J. and Senba, M. and Shelley, M. and Fleming, Donald G.}
}
@article {3771,
	title = {Comparison of positive flux operators for transition state theory using a solvable model},
	journal = {Journal of Chemical Physics},
	volume = {104},
	number = {18},
	year = {1996},
	note = {ISI Document Delivery No.: UJ114Times Cited: 16Cited Reference Count: 34},
	month = {May},
	pages = {7015-7026},
	type = {Article},
	abstract = {Several quantum operators representing {\textquoteright}{\textquoteright}positive flux{\textquoteright}{\textquoteright} are compared for the square barrier by examining their ability to reproduce the exact transmittance when traced with the exact microcanonical density operator. They are obtained by means of the {\textquoteright}{\textquoteright}Weyl rule,{\textquoteright}{\textquoteright} the {\textquoteright}{\textquoteright}Rivier rule,{\textquoteright}{\textquoteright} by symmetrizing the product of {\textquoteright}{\textquoteright}flux{\textquoteright}{\textquoteright} and {\textquoteright}{\textquoteright}positive momentum projection{\textquoteright}{\textquoteright} operators, acid by a variational technique. Explicit expressions are given for all cases. (C) 1996 American Institute of Physics.},
	keywords = {QUANTUM, RATE CONSTANTS},
	isbn = {0021-9606},
	url = {<Go to ISI>://A1996UJ11400012},
	author = {Muga, J. G. and Delgado, V. and Sala, R. and Snider, R. F.}
}
@article {3812,
	title = {Vibrational nonequilibrium in a supersonic expansion with reaction: Application to O-2-O},
	journal = {Journal of Chemical Physics},
	volume = {104},
	number = {10},
	year = {1996},
	note = {ISI Document Delivery No.: TX780Times Cited: 27Cited Reference Count: 127},
	month = {Mar},
	pages = {3579-3597},
	type = {Review},
	abstract = {The hypersonic expansion of O-2 through a nozzle is considered. The steady nonequilibrium vibrational distribution function of O-2, and the nonequilibrium forward reaction rate coefficient for the dissociation of O-2 are calculated theoretically. In the first instance, the vibrational relaxation of O-2 in the absence of reaction is examined in the temperature range 500-2500 K. The master equation for the vibrational populations, coupled to the steady one-dimensional conservation equations is solved numerically. The vibrational population obtained in this way, is compared to the distribution calculated using either a Treanor model or a Boltzmann distribution characterized by a vibrational temperature. The transition probabilities between O-2 vibrational levels employed take into account the vibrational anharmonicity, and the anisotropic intermolecular potential. For the temperature range 2500-5000 K, the vibrational relaxation including dissociation and recombination is studied. The reactive probabilities that are required for this calculation were obtained from the model of Kiefer and Hajduk [Chem. Phys. 38, 329 (1979)]. (C) 1996 American Institute of Physics.},
	keywords = {CHEMICAL-KINETICS, CROSS-SECTIONS, DIATOMIC, DISSOCIATION, HF-HF COLLISIONS, OSCILLATOR, POTENTIAL-ENERGY SURFACE, RATE CONSTANTS, SELF-RELAXATION, STATE, TEMPERATURE},
	isbn = {0021-9606},
	url = {<Go to ISI>://A1996TX78000021},
	author = {Shizgal, B. D. and Lordet, F.}
}
@article {3560,
	title = {EVIDENCE FOR REVERSIBLE DISSOCIATIVE ADSORPTION IN THE REACTION OF MOLECULAR CHLORINE WITH GALLIUM-ARSENIDE},
	journal = {Canadian Journal of Chemistry-Revue Canadienne De Chimie},
	volume = {73},
	number = {5},
	year = {1995},
	note = {ISI Document Delivery No.: RG959Times Cited: 2Cited Reference Count: 9},
	month = {May},
	pages = {735-739},
	type = {Article},
	abstract = {The reaction of molecular chlorine with the (100) face of a gallium arsenide crystal has been studied at pressures of Cl-2 between 0.10 and 9.0 Torr and in the temperature range from 90 to 110 degrees C. In contrast to an earlier report, the etch rate was found to be half order with respect to Cl-2. The similarity of these results to those obtained for the reaction of molecular chlorine and bromine with silicon points to a mechanism in which the gaseous halogen molecule is first physisorbed on the semiconductor surface and then dissociates into chemisorbed atoms. The data indicate that both steps occur reversibly at higher pressures, where the composite half-order rate constant can be represented by the Arrhenius equation: k(1/2) = 10(13.6+/-2.6) mu m min(-1) Torr(-1/2) e(-(100+/-19kJ) (mol-1/RT)) At low pressures the first-order rate constant is given by the equation: k(1) = 10(10.4+/-2.3) mu m min(-1) Torr(-1) e(-(76+/-16kJ) (mol-1/RT)},
	keywords = {bromine, DOPED POLYCRYSTALLINE SILICON, ETCHING, GALLIUM ARSENIDE, IODINE, KINETICS, MOLECULAR CHLORINE, RATE CONSTANTS},
	isbn = {0008-4042},
	url = {<Go to ISI>://A1995RG95900014},
	author = {Wong, K. C. and Ogryzlo, E. A.}
}
@article {3311,
	title = {KINETIC-STUDY OF ATOMIC-HYDROGEN ETCHING OF GAAS(100)},
	journal = {Journal of Applied Physics},
	volume = {77},
	number = {5},
	year = {1995},
	note = {ISI Document Delivery No.: RC303Times Cited: 3Cited Reference Count: 39},
	month = {Mar},
	pages = {2155-2159},
	type = {Article},
	keywords = {GaAs, GALLIUM-ARSENIDE, H-2, OXIDES, PLASMAS, RATE CONSTANTS, RESONANCE, SI, SILICON, SURFACES},
	isbn = {0021-8979},
	url = {<Go to ISI>://A1995RC30300054},
	author = {Elzey, J. W. and Meharg, P. F. A. and Ogryzlo, E. A.}
}
@article {3473,
	title = {MU+NO - KINETIC ISOTOPE EFFECTS IN UNIMOLECULAR DISSOCIATION},
	journal = {Journal of Physical Chemistry},
	volume = {99},
	number = {47},
	year = {1995},
	note = {ISI Document Delivery No.: TF811Times Cited: 10Cited Reference Count: 80},
	month = {Nov},
	pages = {17160-17168},
	type = {Article},
	abstract = {The thermal addition reaction Mu + NO + M reversible arrow MuNO* + M has been studied by a longitudinal magnetic field muon spin relaxation (mu SR) technique, at room temperature, in the presence of up to 60 atm of N-2 as inert moderator. The pressure dependence of the effective rate constant for Mu addition (k(eff)) demonstrates that the system remains well in the low-pressure regime in this pressure range. The termolecular rate constant, k(0)(Mu) = (8.76 +/- 0.46) x 10(-33) cm(6) molecule(-2) s(-1), is about 5 times smaller than that reported for the corresponding H-atom reaction (Tsang, W.; Herron, J. T. J. Phys. Chem. Ref. Data 1991, 20, 609), the largest isotope effect of its kind yet reported for reactions of this nature and most likely due to the increased rate of MuNO* dissociation resulting from the much lighter mass of the Mu atom (m(Mu)/m(H) similar to 1/9). This result should provide an important test of theoretical calculations for dissociating molecules involving few degrees of freedom. Quantum tunneling, normally facile for the much lighter Mu atom, is unlikely to play a major role in establishing the isotope effect seen in k(0). In the present instance, the mu SR technique relies on measuring the relaxation rate for the chemical process of addition (lambda(c)) in competition with that for spin exchange (lambda(se)), with the NO unpaired electron. The pressure-independent average value for the spin exchange rate constant found, k(se) = (3.00 +/- 0.12) x 10(-10) cm(3) molecule(-1) s(-1), is in good agreement with previous values obtained by transverse field mu SR (Fleming, D. G., et al. J. Chem. Phys. 1980, 73, 2751).},
	keywords = {CHANNEL MODEL-CALCULATIONS, CHARACTERIZATION, ELECTRON-SPIN EXCHANGE, H+CH3->CH4 RECOMBINATION, INTERPOLATED, MICROCANONICAL VARIATIONAL THEORY, PARTITION-FUNCTION, POTENTIAL-ENERGY, PRESSURE-DEPENDENCE, RADICAL RECOMBINATION, RATE CONSTANTS, SURFACES, THEORETICAL},
	isbn = {0022-3654},
	url = {<Go to ISI>://A1995TF81100019},
	author = {Pan, J. J. and Senba, M. and Arseneau, D. J. and Gonzalez, A. C. and Kempton, J. R. and Fleming, Donald G.}
}
@article {3528,
	title = {THE THERMAL-REACTION RATE OF MUONIUM WITH METHANE (AND ETHANE) IN THE GAS-PHASE},
	journal = {Journal of Chemical Physics},
	volume = {102},
	number = {12},
	year = {1995},
	note = {ISI Document Delivery No.: QM507Times Cited: 12Cited Reference Count: 52},
	month = {Mar},
	pages = {4860-4869},
	type = {Article},
	keywords = {ABINITIO, ABSTRACTION, DYNAMICS, FLASH-PHOTOLYSIS, H-2 REVERSIBLE CH4+H, MU+D2, RATE CONSTANTS, REACTION-KINETICS, SURFACES, TRANSITION-STATE THEORY},
	isbn = {0021-9606},
	url = {<Go to ISI>://A1995QM50700015},
	author = {Snooks, R. and Arseneau, D. J. and Fleming, Donald G. and Senba, M. and Pan, J. J. and Shelley, M. and Baer, S.}
}
@article {2889,
	title = {MUONIUM ATOM SPIN-EXCHANGE WITH ALKALI-METAL VAPORS - MU+CS},
	journal = {Physical Review A},
	volume = {48},
	number = {2},
	year = {1993},
	note = {ISI Document Delivery No.: LQ990Times Cited: 15Cited Reference Count: 77},
	month = {Aug},
	pages = {1218-1226},
	type = {Article},
	abstract = {The thermally averaged total electron spin-flip cross sections (sigma(SF)) for Mu-Cs have been measured in a 2 atm N2 moderator at 543, 566, and 643 K using the muon-spin-rotation technique. Within an overall experimental error of +/-15\%, the measured cross sections can be taken as temperature independent, sigma(SF)=39.7+/-6.0 X 10(-16) cm2, though there may be a trend to decreased values at the lower temperatures. This average value is considerably lower than either the early calculated results of Dalgarno and Rudge [Proc. R. Soc. London Ser. A 286, 519 (1965)] or the more recent ones of Cole and Olson [Phys. Rev. A 31, 2137 (1985)] for the corresponding H-Cs collisions, indicating a dramatic isotope effect.},
	keywords = {ADDITION-REACTIONS, COLLISIONS, CROSS-SECTIONS, ENERGIES, HYDROGEN-ATOMS, LOW-PRESSURE GASES, MU-SR, RATE CONSTANTS, relaxation, SCATTERING},
	isbn = {1050-2947},
	url = {<Go to ISI>://A1993LQ99000046},
	author = {Pan, J. J. and Senba, M. and Arseneau, D. J. and Kempton, J. R. and Fleming, Donald G. and Baer, S. and Gonzalez, A. C. and Snooks, R.}
}
@article {7248,
	title = {MUONIUM REACTION-KINETICS WITH THE HYDROGEN HALIDE GASES},
	journal = {Journal of Chemical Physics},
	volume = {97},
	number = {9},
	year = {1992},
	note = {ISI Document Delivery No.: JX295Times Cited: 14Cited Reference Count: 80},
	month = {Nov},
	pages = {6309-6321},
	type = {Article},
	abstract = {The reaction rates of the muonium (Mu) atom with HBr and HI in approximately 1 atm N2 moderator have been measured over the temperature range 160-490 K using the muSR technique. While both abstraction and exchange reactions are possible, only the abstraction reaction should be observable, being moderately exothermic. Comparisons with the corresponding H(D) reactions reveal small kinetic isotope effects in both reactions, which do not vary strongly with temperature (k(Mu)/k(H) almost-equal-to 3.5 near 300 K), consistent with the (classical) ratio of mean velocities. Surprisingly, quantum tunneling, normally facile for similarly exothermic reactions of the ultralight Mu atom (m(Mu)/M(H) almost-equal-to 1/9), appears to be of little importance here. This despite the fact that the (temperature-independent) experimental activation energies are much less than the expected vibrationally adiabatic barrier heights (estimated to be almost-equal-to 1. 5 kcal mol-1) and, particularly in the case of Mu + HI, much less than the corresponding H-atom activation energy: 0. 13 +/- 0.03 vs 0.70 +/- 0. 3 kcal mol-1. In the case of reactions with HBr, the experimental Mu- and H-atom activation energies are much more similar: 0. 51 +/- 0.03 and 0.74 +/- 0. 12 kcal mol-1, respectively, over comparable temperature ranges. These data pose a conundrum in which several compensating effects related to the much lighter Mu-atom mass seem to be involved. Theoretical calculations are urgently required. In our view the topography of the potential-energy surface(s) for H-2X is poorly known, particularly in the region of the barrier. It may be that the abstraction barriers for both Mu + HI and Mu + HBr are considerably later and even smaller than current calculations indicate, resulting in a cancellation of the effects of zero-point-energy shifts and quantum tunneling at the transition state. Differences in skewing angles between Mu and H + HX could favor a shorter tunneling path for the H-atom reaction, possibly compensating for its heavier mass. Steric or rebound effects from "bottlenecks" on the (mass-weighted) potential surfaces for Mu reactivity may also play some role. An upper limit for the 300 K reaction rate of Mu + HCI is given as well. In contrast to both HBr and HI, this reaction is quite endothermic and hence exhibits an inverse kinetic isotope effect (k(Mu) much less than k(H)).},
	keywords = {ABSTRACTION REACTIONS, CALCULATIONS, CHEMICAL-REACTIONS, EV COLLISION ENERGY, EXCHANGE-REACTIONS, H+HX COLLISIONS, ISOTOPIC, POTENTIAL-ENERGY SURFACE, QUANTUM-MECHANICAL, RATE CONSTANTS, TRANSITION-STATE THEORY, VARIANTS},
	isbn = {0021-9606},
	url = {<Go to ISI>://A1992JX29500038},
	author = {Gonzalez, A. C. and Tempelmann, A. and Arseneau, D. J. and Fleming, Donald G. and Senba, M. and Kempton, J. R. and Pan, J. J.}
}
@article {7028,
	title = {RATE CONSTANTS FOR THE ETCHING OF GALLIUM-ARSENIDE BY ATOMIC CHLORINE},
	journal = {Plasma Chemistry and Plasma Processing},
	volume = {11},
	number = {2},
	year = {1991},
	note = {ISI Document Delivery No.: FH606Times Cited: 4Cited Reference Count: 13},
	month = {Jun},
	pages = {311-321},
	type = {Article},
	abstract = {Known chlorine atom concentrations were prepared in a discharge flow system and used to etch the (100) face of a gallium arsenide single crystal. The etch rate was monitored by mass spectrometry, laser interferometry, and surface profilometry. In the temperature range from 90 to 160-degrees-C the reaction can be described by the rate law Etch rate = kP(cl) where k = 9 x 10(6+/-0.5) mu-m min-1 Torr-1 e-9+/-1)kcal/RT.},
	keywords = {EXPERIMENTAL, GaAs, PLASMA ETCHING, RATE CONSTANTS},
	isbn = {0272-4324},
	url = {<Go to ISI>://A1991FH60600009},
	author = {Ha, J. H. and Ogryzlo, E. A.}
}
@article {6889,
	title = {QUANTUM PHENOMENA AND SOLVENT EFFECTS ON ADDITION OF HYDROGEN ISOTOPES TO BENZENE AND TO DIMETHYLBUTADIENE},
	journal = {Berichte Der Bunsen-Gesellschaft-Physical Chemistry Chemical Physics},
	volume = {94},
	number = {11},
	year = {1990},
	note = {ISI Document Delivery No.: EU906Times Cited: 18Cited Reference Count: 4189TH GENERAL ASSEMBLY OF THE DEUTSCHE-BUNSEN-GESELLSCHAFT-FUR-PHYSIKALISCHE-CHEMIE ( ON THE 65TH BIRTHDAY OF THEODOR ACKERMANN ) : CHEMICAL ELEMENTAL REACTIONSMAY 24-26, 1990TUBINGEN, FED REP GERDEUT BUNSEN GESELL PHYS CHEM},
	month = {Nov},
	pages = {1224-1230},
	type = {Proceedings Paper},
	abstract = {Rate constants have been measured for the reaction of the light hydrogen isotope muonium with benzene and 2,3-dimethylbutadiene-1,3 in the gas phase and in several solvents. Comparison with H atom data reveals (1) appreciable kinetic isotope effects, (2) a strong contribution of tunnelling for the activated reaction with benzene, (3) encounter controlled reaction for Mu addition to the diene, (4) a mass dependence of the diffusion constant of hydrogen isotopes in solution, and (5) an enhancement of the rate constant in solution over that in the gas phase by a factor, except for water, of the inverse Ostwald solubility coefficient for hydrogen. The isotope-dependent reduction of the solvent effect in water is tentatively ascribed to the dynamics of the clathrate-like structure when the hydrogen atom reacts.},
	keywords = {ATOM, DIFFUSION, electron, ELEMENTARY REACTIONS, GASES, ISOTOPE EFFECTS, KINETICS, LIQUIDS, muonium, radicals, RATE CONSTANTS, solutions, WATER},
	isbn = {0005-9021},
	url = {<Go to ISI>://A1990EU90600008},
	author = {Roduner, E. and Louwrier, P. W. F. and Brinkman, G. A. and Garner, D. M. and Reid, I. D. and Arseneau, D. J. and Senba, M. and Fleming, Donald G.}
}
