Jr. Sabin et al., AN ESTIMATE OF THE TEMPERATURE-DEPENDENCE OF THE STOPPING CROSS-SECTION IN MOLECULAR TARGETS, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 93(2), 1994, pp. 161-165
Using the polarization propagator formalism, we have calculated the di
pole oscillator strength distribution for H-2 at various internuclear
distances. The appropriate quantities were then temperature averaged,
and used in conjunction with Bethe, Barkas and Bloch terms to estimate
the effect of temperature on molecular stopping. The change in stoppi
ng cross section was found to be of the order of 10% in the case of H-
2 for temperature differences of 5000 K. We argue that this is conside
rably larger than the H-2/D2 isotope effect.