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Prog. Theor. Phys. Vol. 18 No. 2 (1957) pp. 163-182

Inelastic Scattering of Neutrons and Surface Direct Processes

Haruo Ui

Institute of Science and Technology, University of Tokyo, Meguro-ku, Tokyo

(Received April 5, 1957)

Abstract:

In the case of inelastic scattering of neutrons in which the residual nucleus is left in a definite low-lying excited state, the surface direct processes through single particle excitation and through same sort of many particle excitations are formulated in a similar manner as in deuteron-stripping reaction. The distorted wave method is employed and its validity for the mentioned processes is discussed in some detail. The cross sections obtained are compared with that of another surface direct process accompanied by collective excitation and with that of the process through compound nucleus formation. It is shown that for intermediate and heavy nuclei (i) the collective excitation is much larger than the single particle excitation and (ii) the compound nucleus process is more important than the surface direct process in low energy region in which there are few open channels, while the latter is much larger than the former in higher energy region where many channels are open.

URL : http://ptp.ipap.jp/link?PTP/18/163/
DOI : 10.1143/PTP.18.163

[ Full Text PDF : FREE ACCESS (1732K) ] Citation: Plain Text BiBTeX EndNote(RIS) RSS

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Citing Article(s) :

1. Progress of Theoretical Physics Vol. 19 No. 2 (1958) pp. 169-191 :

   Theory of Direct Interaction in Nucleon Inelastic Scattering

   Shiro Yoshida

2. Progress of Theoretical Physics Vol. 21 No. 3 (1959) pp. 468-471 :

   On the Intermediate Resonance Levels in the Nuclear Reactions

   Sin-iti Igarasi, Ko Izumo and Takeshi Udagawa

3. Progress of Theoretical Physics Vol. 25 No. 4 (1961) pp. 613-634 :

   Antisymmetric Treatment of Deuteron-Stripping Reaction

   Tsuyoshi Honda and Haruo Ui

4. Progress of Theoretical Physics Vol. 26 No. 6 (1961) pp. 807-828 :

   Partial Equilibrium Model for Nuclear Reactions

   Ko Izumo

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