@article { ISI:000306361000005, title = {Efficient method for quantum calculations of molecule-molecule scattering properties in a magnetic field}, journal = {JOURNAL OF CHEMICAL PHYSICS}, volume = {137}, number = {2}, year = {2012}, month = {JUL 14}, pages = {024103}, abstract = {We show that the cross sections for molecule-molecule collisions in the presence of an external field can be computed efficiently using a total angular momentum basis, defined either in the body-fixed frame or in the space-fixed coordinate system. This method allows for computations with much larger basis sets than previously possible. We present calculations for (NH)-N-15-(NH)-N-15 collisions in a magnetic field. Our results support the conclusion of the previous study that the evaporative cooling of rotationally ground (NH)-N-15 molecules in a magnetic trap has a prospect of success. (C) 2012 American Institute of Physics. {[}http://dx.doi.org/10.1063/1.4733288]}, issn = {0021-9606}, doi = {10.1063/1.4733288}, author = {Suleimanov, Yu. V. and Tscherbul, T. V. and Krems, R. V.} }