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NEUTRON-PRODUCTION IN EXTENDED CU-TARGET IRRADIATED WITH RELATIVISTIC C-12-IONS AT DUBNA, AS STUDIED WITH SSNTD AND NUCLEAR CHEMISTRY
ABDULLAEV, IG; ADLOFF, JC; BERSINA, IG; BISPLINGHOFF, B; BRADNOVA, V; BRANDT, R; BUTSEV, VS; CUI, HH; DEBEAUVAIS, M; DWIVEDI, KK; FRIEDLANDER, EM; GOSH, S; GUO, SL; HEISE, S; KRIVOPUSTOV, MI; KULAKOV, BA; LANGROCK, EJ; LAUE, C; LERMAN, L; PERELYGIN, VP; SCHMIDT, T; SOSNIN, AN; VATER, P; VONDERAU, S; WANG, XL; ZAMANI, M
1995
发表期刊RADIATION MEASUREMENTS
卷号25期号:1-4页码:#REF!
通讯作者ABDULLAEV, IG (reprint author), DUBNA JOINT NUCL RES INST,FLEROV LAB NUCL REACT,DUBNA 141980,RUSSIA.
摘要An extended Cu-target was irradiated with 22 and 44 GeV carbon ions, The target was in contact with a (CH2)(n)-block for the moderation of secondary neutrons. Small holes in the moderator were filled with either lanthanium salts or uranium oxide. The reaction La-139 (n,gamma) La-140 -->/(beta) was studied via the decay of La-140 (40 h), and the reaction U-238 (n, gamma) U-239 -->/(beta) Np-239 -->/(beta) was studied via the decay of Np-239 (2.3 d). In addition, a variety of solid state nuclear track detectors (SSNTD) were used. Results will be presented. The yields for the formation of (n, gamma) products agree essentially with other experiments on extended targets carried out at the Synchrophasotron LHE, JINR (Dubna). To a first approximation, the breeding rate of (n, gamma) products, as well as the specific track density, seen with several SSNTDs, doubles when the carbon energy is increased from 22 to 44 GeV. If, however, results at 44 GeV are compared in detail to those at 22 GeV, we observe an excess of (37 +/- 9) % in the experimentally observed Np-239-breeding rate over theoretical estimations. Experiments using solid state nuclear track detectors are giving similar results. We also observed in the past such excess in the yield of other secondary particles in relativistic heavy ion interactions above a total energy of approximately 35-40 GeV.
文章类型Article; Proceedings Paper
关键词RELATIVISTIC HEAVY IONS ENHANCED NUCLEAR CROSS-SECTIONS
学科领域Nuclear Science & Technology
DOI10.1016/1350-4487(95)00076-Q
收录类别SCI
WOS类目Nuclear Science & Technology
WOS记录号WOS:A1995RE48000054
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/227011
专题多学科研究中心
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GB/T 7714
ABDULLAEV, IG,ADLOFF, JC,BERSINA, IG,et al. NEUTRON-PRODUCTION IN EXTENDED CU-TARGET IRRADIATED WITH RELATIVISTIC C-12-IONS AT DUBNA, AS STUDIED WITH SSNTD AND NUCLEAR CHEMISTRY[J]. RADIATION MEASUREMENTS,1995,25(1-4):#REF!.
APA ABDULLAEV, IG.,ADLOFF, JC.,BERSINA, IG.,BISPLINGHOFF, B.,BRADNOVA, V.,...&ZAMANI, M.(1995).NEUTRON-PRODUCTION IN EXTENDED CU-TARGET IRRADIATED WITH RELATIVISTIC C-12-IONS AT DUBNA, AS STUDIED WITH SSNTD AND NUCLEAR CHEMISTRY.RADIATION MEASUREMENTS,25(1-4),#REF!.
MLA ABDULLAEV, IG,et al."NEUTRON-PRODUCTION IN EXTENDED CU-TARGET IRRADIATED WITH RELATIVISTIC C-12-IONS AT DUBNA, AS STUDIED WITH SSNTD AND NUCLEAR CHEMISTRY".RADIATION MEASUREMENTS 25.1-4(1995):#REF!.
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