Statisticaljz approximations for differential cross sections: preliminary results for He + H2 and He + CO2
โ Scribed by Yair Shimoni; Donald J. Kouri
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- English
- Weight
- 618 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
โฆ Synopsis
The statistical& approximation developed recently is extended to include drfferential cross sections. Two levels of the approximatlon are studied, both of which ledd to the same expressions for the statisticalIZ integral cross sections. The approach is illustrated by applications to He + HZ and He + COa collisions, and the results agree very well with results of ful.QCCS calculations. Thus,j.$CS quabty differential cross sections can now be obtamed extremely efficiently by this new statrsticeljz approximation.
๐ SIMILAR VOLUMES
## Appro\unate d~flizrcntwl cross sccl~ons are c&xl&d (using collmcar exact quantum reaction S matrices with tnnslttun SISIU theory) for the r+H2(u = 0) -H~(u' = 2), H~(u' = 3) + H rcact~ons at translational cnergics of 1.9 and 2.9 kcal/ molt. I-or the former rcacl~on the cross scctlon is backward
Total integral cross sections for 4He f H2 (XI=: 0, j = 0) --, 4He + H2 (i= 1,j' = 0,2) have been calcuIated in the total energy range 1.2 to 5.5 eV, according to a quanta1 suddenapprovimation for the H2 rotational degrees of freedom and a cIose coupling expansion of the vibrationa degree of freedom
A small cross section for H+ (D+) production from He+ + Hz (Dz) reactions has been detected in ion beam collisioncell experiments. Below 7 eV (c m.) this cross section exhibits a positive energy dependence down to =l eV (c-m.). An inverse dependence is observed over the range 0.1-l eV (c-m.). Possib
Cross sections and rate constants are calcuhted for the dcactivPtion of the bcndingnbrational mode of the CO2 molccule colliding with Hc and NC. Rcsull\_s obtained using semlclaxical, scmiclxsical sudden and quantum vlbrntion inrmiw order-sudden methods YC compxcd