Angular distributions of light projectile fragments in deep inelastic Pb+Em interactions at 160 A GeV
文献类型:期刊论文
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作者 | EMU |
刊名 | EUROPEAN PHYSICAL JOURNAL A
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出版日期 | 1999 ; 1999 |
卷号 | 6期号:4页码:421-425 |
关键词 | COLLISIONS COLLISIONS |
DOI | 10.1007/s100500050365 |
通讯作者 | Adamovich, MI (reprint author), PN Lebedev Phys Inst, Leninsky Prospect 53, Moscow 117924, Russia. ; Adamovich, MI (reprint author), PN Lebedev Phys Inst, Leninsky Prospect 53, Moscow 117924, Russia. |
英文摘要 | The nuclear emulsion was exposed at CERN by the lead projectile at 160 A GeV. The angles between any pair of fragments with Z = 2 - 4 have been measured in the emulsion plane for the events which did not contain heavy fragments. The constant characterizing the normal angle (cp) distribution of the fragment momentum projection onto the emulsion plane with respect to initial projectile momentum Po is found to be sigma(phi) = (0.37 +/- 0.02) mrad. Corresponding value sigma(o) = (121 +/- 6) MeV/c of nucleon momentum distribution in the lead nucleus coincides with that expected from Fermi momentum distribution for this nucleus. The peak in the pair-angle distribution of double-charged fragments, Be-8 --> 2 alpha, is presented for the region of small angles (< 0.1 mrad). The fraction of alpha-particles coming from the decay of the ground state Be-8 is found to be (13 +/- 2)% of their whole number.; The nuclear emulsion was exposed at CERN by the lead projectile at 160 A GeV. The angles between any pair of fragments with Z = 2 - 4 have been measured in the emulsion plane for the events which did not contain heavy fragments. The constant characterizing the normal angle (cp) distribution of the fragment momentum projection onto the emulsion plane with respect to initial projectile momentum Po is found to be sigma(phi) = (0.37 +/- 0.02) mrad. Corresponding value sigma(o) = (121 +/- 6) MeV/c of nucleon momentum distribution in the lead nucleus coincides with that expected from Fermi momentum distribution for this nucleus. The peak in the pair-angle distribution of double-charged fragments, Be-8 --> 2 alpha, is presented for the region of small angles (< 0.1 mrad). The fraction of alpha-particles coming from the decay of the ground state Be-8 is found to be (13 +/- 2)% of their whole number. |
学科主题 | Physics ; Physics |
类目[WOS] | Physics, Nuclear ; Physics, Particles & Fields |
收录类别 | SCI |
语种 | 英语 ; 英语 |
WOS记录号 | WOS:000084668500011 ; WOS:000084668500011 |
公开日期 | 2016-02-25 |
源URL | [http://ir.ihep.ac.cn/handle/311005/212011] ![]() |
专题 | 高能物理研究所_粒子天体物理中心 |
作者单位 | 中国科学院高能物理研究所 |
推荐引用方式 GB/T 7714 | EMU. Angular distributions of light projectile fragments in deep inelastic Pb+Em interactions at 160 A GeV, Angular distributions of light projectile fragments in deep inelastic Pb+Em interactions at 160 A GeV[J]. EUROPEAN PHYSICAL JOURNAL A, EUROPEAN PHYSICAL JOURNAL A,1999, 1999,6, 6(4):421-425, 421-425. |
APA | EMU.(1999).Angular distributions of light projectile fragments in deep inelastic Pb+Em interactions at 160 A GeV.EUROPEAN PHYSICAL JOURNAL A,6(4),421-425. |
MLA | EMU."Angular distributions of light projectile fragments in deep inelastic Pb+Em interactions at 160 A GeV".EUROPEAN PHYSICAL JOURNAL A 6.4(1999):421-425. |
入库方式: OAI收割
来源:高能物理研究所
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