@article {1076,
	title = {Ground and first-excited global potential energy surfaces of the H2O+-He complex: Predictions of ion mobilities},
	journal = {International Journal of Quantum Chemistry},
	volume = {101},
	number = {1},
	year = {2005},
	note = {ISI Document Delivery No.: 872KKTimes Cited: 2Cited Reference Count: 29},
	month = {Jan},
	pages = {1-7},
	type = {Article},
	abstract = {Ion mobilities of H2O+ drifting in helium are calculated and compared with experiment. These calculations employ global potential energy surfaces of the H2O+-He complex, which in the present case were calculated ab initio at the unrestricted MP2 level of theory using a basis set of aug-cc-pVTZ quality, and treating the ion as a rigid body. Details are presented of the general characteristics of both the ground and first-excited electronic states of the complex. Although only the ground-state surface was used for the mobility calculations, the ab initio determination of the ground state necessitated the inclusion of the first-excited state owing to the presence of a crossing between the two. This crossing is also described. Mobilities calculated from the global surfaces are in good agreement with experiment. (C) 2004 Wiley Periodicals, Inc.},
	keywords = {AB-INITIO, COLLISIONAL ALIGNMENT, first-excited state, global energy, H2O+-He complex, HELIUM, INDUCED ROTATIONAL ALIGNMENT, ion mobility, MICROSOLVATION, MOLECULAR-DYNAMICS, MP2, SPECTRA, SUPERSONIC EXPANSIONS, SURFACE, VELOCITY, WATER CATION},
	isbn = {0020-7608},
	url = {<Go to ISI>://000225205900001},
	author = {Chen, X. and Thachuk, M.}
}
@article {1283,
	title = {Nonequilibrium distribution functions for general rigid bodies in axially symmetric environments},
	journal = {Physical Review A},
	volume = {72},
	number = {3},
	year = {2005},
	note = {ISI Document Delivery No.: 969IRTimes Cited: 0Cited Reference Count: 20},
	month = {Sep},
	pages = {10},
	type = {Article},
	abstract = {A vector rho is introduced in such a manner that the equilibrium rotational distribution function for a general rigid body has a simple quadratic form both from a body-fixed and space-fixed frame of reference. It is shown that when considering nonequilibrium distribution functions, representations employing the components of rho generalize more easily than those employing the components of the angular momentum or angular velocity, and lead to forms with greater accuracy. The behavior of rho and its relation to the angular momentum of the system is explored in some detail. Comparisons are made with distribution functions generated from molecular dynamics simulations of H2O+ drifting in a helium bath gas under the influence of a uniform electric field.},
	keywords = {ALIGNMENT, COLLISION CROSS-SECTIONS, HELIUM, IONS, MOBILITIES, MOLECULAR-DYNAMICS, POTENTIAL-ENERGY SURFACES, ROTATIONAL, SCATTERING, SUPERSONIC EXPANSIONS, VELOCITY},
	isbn = {1050-2947},
	url = {<Go to ISI>://000232228300102},
	author = {Thachuk, M.}
}
@article {531,
	title = {Numerical study of a direct current plasma sheath based on kinetic theory},
	journal = {Physics of Plasmas},
	volume = {9},
	number = {2},
	year = {2002},
	note = {ISI Document Delivery No.: 514CHTimes Cited: 8Cited Reference Count: 43},
	month = {Feb},
	pages = {691-700},
	type = {Article},
	abstract = {A fully kinetic theory model was developed to study plasma properties of the sheath of a direct current glow discharge. This model includes a direct numerical solution of the Boltzmann equations for electron and ion distribution functions with a self-consistent electric field obtained from the Poisson equation. The calculated profiles of density, drift velocity, temperature, and electric potential were used to show the structure of the plasma sheath. The results of the direct numerical solution were compared with a particle-in-cell Monte Carlo simulation. It was also demonstrated that for a small Debye length to the ion mean-free path ratio, results obtained using the continuum sheath model, which includes two parameters, can be matched to the kinetic theory simulations. (C) 2002 American Institute of Physics.},
	keywords = {BOHM CRITERION, CATHODE FALL, COLLISIONAL, ELECTRON MOTION, HELIUM, IONS, MODEL, MONTE-CARLO SIMULATION, RF GLOW-DISCHARGES, SHEATH, TRANSITION},
	isbn = {1070-664X},
	url = {<Go to ISI>://000173418700039},
	author = {Vasenkov, A. V. and Shizgal, B. D.}
}
@article {4528,
	title = {Elemental analysis with quadrupole mass filters operated in higher stability regions},
	journal = {Journal of Analytical Atomic Spectrometry},
	volume = {14},
	number = {8},
	year = {1999},
	note = {ISI Document Delivery No.: 229LPTimes Cited: 23Cited Reference Count: 47},
	month = {Aug},
	pages = {1111-1119},
	type = {Article},
	abstract = {Operation of quadrupole mass filters in higher zones of stability is described with an emphasis on the potential for elemental mass spectrometry. The higher zones allow a resolution at half height of up to 9000 on atomic ions and make possible unit resolution on ions with kinetic energies up to several thousand electron volts. The theory of quadrupole operation is briefly reviewed. Operation of quadrupoles in the third stability region with Mathieu parameters (a,q)approximate to(3,3) and the second stability region with (a,q)approximate to(0.02, 7.55) is described in detail. Previously unpublished data showing the variation of resolution with ion energy are presented. The variation of transmission with resolution is compared with previous calculations and with new calculations presented here.},
	keywords = {2ND, ANALYZER, ATMOSPHERE, DIAGRAM, HELIUM, HIGH-RESOLUTION, ICP-MS, SEPARATION MODE, SPECTROMETER, ZONE},
	isbn = {0267-9477},
	url = {<Go to ISI>://000082196300002},
	author = {Du, Z. H. and Douglas, D. J. and Konenkov, N.}
}
@article {3945,
	title = {Inductively coupled plasma mass spectrometry with a quadrupole mass filter operated in the third stability region},
	journal = {Journal of the American Society for Mass Spectrometry},
	volume = {8},
	number = {12},
	year = {1997},
	note = {ISI Document Delivery No.: YG420Times Cited: 18Cited Reference Count: 31},
	month = {Dec},
	pages = {1230-1236},
	type = {Article},
	abstract = {An inductively coupled plasma mass spectrometer system is described in which the quadrupole mass filter is operated in the third stability region with Mathieu parameters (a, q) approximate to (3, 3). Operation at the upper tip of this region is found to give generally better sensitivity and resolution than operation at the lower tip. A limiting resolution at half height of 4000 at m/z 59 is possible with operation at the upper tip. This resolution is insufficient to separate atomic ions from molecular ions of the same nominal mass except in favorable cases. However, operation at moderate resolution (R-1/2 = 500 to 1000) is found to give very high abundance sensitivity (>10(7)). The results suggest that the third stability region may be advantageous for specialized applications of inductively coupled plasma mass spectrometry. (C) 1997 American Society for Mass Spectrometry.},
	keywords = {ANALYZER, HELIUM, HIGH-RESOLUTION, IMPERFECT FIELDS, INTERFERENCES, ION OPTICAL-PROPERTIES, MODE, SEPARATION},
	isbn = {1044-0305},
	url = {<Go to ISI>://A1997YG42000005},
	author = {Du, Z. H. and Olney, T. N. and Douglas, D. J.}
}
@article {3083,
	title = {ELECTRON DEGRADATION AND THERMALIZATION IN SIH4 GAS},
	journal = {Chemical Physics},
	volume = {185},
	number = {1},
	year = {1994},
	note = {ISI Document Delivery No.: NV740Times Cited: 9Cited Reference Count: 30},
	month = {Jul},
	pages = {1-11},
	type = {Article},
	abstract = {The time-dependent Boltzmann equation is applied to the study of the degradation and thermalization of a nonequilibrium distribution of subexcitation electrons in SiH4. For the small electron to SiH4 mass ratio, the collision operators in the Boltzmann equation reduce to the differential Fokker-Planck operator for elastic collisions and the difference operator for inelastic collisions. A finite difference method of solution of the Boltzmann equation is used. The time evolution of the electron energy distribution and the thermalization time of subexcitation electrons are calculated for initial electron energies of 1, 3 and 5 eV. It is shown that super elastic collisions due to vibrational de-excitation play an important role in the thermalization process.},
	keywords = {CROSS-SECTIONS, ENERGY, HELIUM, INITIAL PRODUCTS, NITROGEN, SPECTRA, SUBEXCITATION ELECTRONS, TIME-DEPENDENT ASPECTS, YIELDS},
	isbn = {0301-0104},
	url = {<Go to ISI>://A1994NV74000001},
	author = {Kowari, K. and Shizgal, B. D.}
}
@article {7058,
	title = {TIME-DEPENDENT ELECTRON-DISTRIBUTION FUNCTIONS AND DEGRADATION SPECTRA - A COMPARISON OF THE SPENCER-FANO EQUATION AND THE BOLTZMANN-EQUATION},
	journal = {Applied Radiation and Isotopes},
	volume = {42},
	number = {10},
	year = {1991},
	note = {ISI Document Delivery No.: GL858Times Cited: 8Cited Reference Count: 43SYMP ON THE PHYSICS OF ELECTRON TRANSPORTAPR 02-03, 1990GAITHERSBURG, MDUS DOE, OFF HLTH \& ENVIRONM RES},
	pages = {985-994},
	type = {Proceedings Paper},
	abstract = {The thermalization of electrons in gaseous moderators for initial nonequilibrium distributions not far removed from thermal energies has been studied previously with a Fokker-Planck equation for electron distribution. For electron energies in the keV to eV energy range an approach based on the Spencer-Fano equation has also been used. The present paper considers a detailed comparison of the two approaches to electron thermalization. The Spencer-Fano equation is analogous to the Fokker-Planck equation but with the moderator temperature set to zero, that is, with the cold gas approximation. The effect of the cold gas approximation on the time evolution of the nonequilibrium distributions and on the calculation of thermalization times is discussed in detail. The cold gas approximation is shown to be the basis for most of the concepts used in radiation chemistry and physics to study electron degradation. Applications to the thermalization of electrons in the inert gases are considered. The analysis is restricted to elastic electron-moderator collisions.},
	keywords = {ARGON, HELIUM, HOT-ATOM REACTIONS, INITIAL PRODUCTS, NITROGEN, RARE-GAS MODERATORS, SUBEXCITATION ELECTRONS, THERMALIZATION, TRANSPORT, YIELDS},
	isbn = {0969-8043},
	url = {<Go to ISI>://A1991GL85800010},
	author = {Kowari, K. and Shizgal, B.}
}
