Neutron production in deuteron-induced reactions on Li, Be, and C at an incident energy of 102 MeV

Araki, Shouhei; Watanabe, Yukinobu; Kitajima, Mizuki; Sadamatsu, Hiroki; Nakano, Keita; Kin, Tadahiro; Iwamoto, Yosuke; Satoh, Daiki; Hagiwara, Masayuki; Yashima, Hiroshi; Shima, T.

doi:10.1051/epjconf/201714611027

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“…The deuteron is a weakly bound nucleus and easily breaks up by the interaction with a target nucleus. By previous experimental [4][5][6][7][8][9][10] and theoretical [11][12][13][14][15][16][17][18] studies including ours [19][20][21][22][23][24], it is well-known that breakup processes play a significant role in the secondary nucleon emission from deuteron-induced reactions. Similarly, the breakup processes are expected to have some influence on spallation reactions.…”

Section: Introductionmentioning

confidence: 99%

Role of breakup processes in deuteron-induced spallation reactions at 100–200 MeV/nucleon

et al. 2018

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Background: Use of deuteron-induced spallation reactions at intermediate energies has recently been proposed for transmutation of several long-lived fission products (LLFPs). In the design study of a transmutation system using a deuteron primary beam, accurate cross section data of deuteron-induced reactions on the LLFPs are indispensable. Reliable model predictions play an important role in completing the necessary cross section data since currently available experimental data are very limited. Under the circumstances, we have been developing a code system dedicated for deuteron-induced reactions, which is called DEURACS.Purpose: Aiming to predict the production cross sections of residual nuclei, the purpose of the present work is to clarify a role of deuteron breakup processes in deuteron-induced spallation reactions at intermediate energies.Methods: Isotopic production cross sections of residual nuclei in the deuteron-induced reactions on 93 Zr and 107 Pd at 100-200 MeV/nucleon are analyzed using DEURACS, in which the breakup processes are explicitly taken into account. The calculated cross sections are decomposed into individual components corresponding to the absorption of either neutron or proton in the incident deuteron, or the deuteron itself.Results: The calculated cross sections reproduced the experimental data well over a wide mass number range of residual nuclei. From a component-by-component analysis, it was found that the components of nucleon absorption have the significant contributions to the production of residual nuclei.Conclusions: Consideration of the breakup processes is essential to predict the production cross sections of residual nuclei in deuteron-induced reactions. The framework of DEURACS is applicable to deuteron-induced spallation reactions at intermediate energies.

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