Computation of cross sections and polarizations for nuclear reactions, in which only spin 12 particles are involved
✍ Scribed by P. Heiss
- Publisher
- Elsevier Science
- Year
- 1972
- Tongue
- English
- Weight
- 384 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0010-4655
No coin nor oath required. For personal study only.
✦ Synopsis
Nature of physical problem
Restrictions Both for a phase shift analysis [1] and for reaction calcu-
The program is restricted ti) a maximum angular mornenlations (2] one needs to relate cross sections, polarization turn ofL = 3. If higher partial Waves are included, dimensions values, etc. on the one hand and S-matrix elements in the of certain arrays have to be inc~reased. These arrays are speciususal 1sf representation on the other. For general cases this fled in section 3 of the "long Write-up". calculation requires great computational effort [3]. For reactions in which only spin 4-particles are involved this effort Typical running time can be considerably reduced, by the explicit calculation of Halfa second per energy value. theM-matrix [4]. References Method of solution [1] it Kankowsky and D. Fick, Computer Phys. Commun. In the special case under discussion, relatively simple rela-2 (1971) 223. tions between S-matrix elementsand M-matrix elements can [2] P. Heiss and H.H. Hackenbroich, NucL Phys. A182 (1972) be derived [4]. From M-matrix elements, cross sections and 522. polarizations can be obtained in a simple way. Hence, the (3] R.D. McCulloch et aL, OR~NLReport 4121. following program requires only a small amount ofhigh (4] T.A. Tombrello, C.M. ion~s,G.C. Phillips and J.L. Weil, speed storage space and runs relatively fast. NucL Phys. 39 (1962) 541.