β Scribed by I. Procaccia; R.D. Levine
No coin nor oath required. For personal study only.
The information theoretic surprisal analysis is employed to characterise the recent quantal close-coupling computations of rotational excitation rates by Green. The analysis is based on comparing the actual rates to the priors (k Β°) which depend only on the temperature and the reduced "energy defect" AER/kT. The surprisal representation of the computed rates as k = k Β° x exp (-I o -OR iAER]/kT) is accurate throughout the temperature range considered by Green and is found to reduce in the low and high temperature limits to functional forms previously employed to characterise the rotational energy transfer rates in H2.
π SIMILAR VOLUMES
Scattering calculations have been pcrformcd for low-cncrgy collisions of CO with He using the "effective potentid" approximation of Rabitz and the "coupled stat& approximation of hlcGuire and Kouri. These are compl\*rcc! with the X~UriltC quanrum close-uooplin~ scrtttcrbg results of Green and Tbadde
Classical trajectory calculations for the rotational excitation'of CO and Hz by collision &ith He have been carried out and compared to the accurate qu&~m mechanics1 cfculations of other workers The grecment is rasonably encourngig, although some irther&t limitations of this strictly classical appro
Measurements of the distribution of rotational states in a nilrogcn molecular beam before and after dencction by collision with rare gas atoms arc interpreted in terms of the intermolcculai potential. A potential of rhc form qR,e)=46[1 is used with semiclassiml theory using the sudden approximation