Production cross sections of neutron rich isotopes from a 82Se beam

被引：1

作者：

Tarasov, O. B. ^{[1
]}

Morrissey, D. J. ^{[1
,2
]}

Amthor, A. M. ^{[3
]}

Bandura, L. ^{[3
]}

Baumann, T. ^{[1
]}

Bazin, D. ^{[1
]}

Berryman, J. S. ^{[1
]}

Chubarian, G. ^{[4
]}

Fukuda, N. ^{[5
]}

Gade, A. ^{[1
,6
]}

Ginter, T. N. ^{[1
]}

Hausmann, M. ^{[3
]}

Inabe, N. ^{[5
]}

Kubo, T. ^{[5
]}

Pereira, J. ^{[1
]}

Portillo, M. ^{[3
]}

Sherrill, B. M. ^{[1
,6
]}

Stolz, A. ^{[1
,6
]}

Sumithrarachchi, C. ^{[1
]}

Thoennessen, M. ^{[1
,6
]}

Weisshaar, D. ^{[1
]}

机构：

[1] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA

[2] Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA

[3] Michigan State Univ, Facil Rare Isotope Beams, E Lansing, MI 48824 USA

[4] Texas A&M Univ, Cyclotron Inst, College Stn, TX 77843 USA

[5] RIKEN, RIKEN Nishina Ctr, Wako, Saitama 3510198, Japan

[6] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

来源：

11TH INTERNATIONAL CONFERENCE ON NUCLEUS-NUCLEUS COLLISIONS (NN2012) | 2013年 / 420卷

基金：

美国国家科学基金会;

关键词：

MOMENTUM DISTRIBUTIONS; PROJECTILE FRAGMENTATION; SODIUM ISOTOPES; DEFORMATION; SYSTEMATICS; SEPARATORS; NUCLEI; REGION; DECAY;

D O I：

10.1088/1742-6596/420/1/012070

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Production cross sections for neutron-rich nuclei from the fragmentation of a Se-82 beam at 139 MeV/u were measured. The longitudinal momentum distributions of 122 neutron-rich isotopes of elements 11 <= Z <= 32 were determined by varying the target thickness. Production cross sections with beryllium and tungsten targets were determined for a large number of nuclei including several isotopes first observed in this work. These are the most neutron-rich nuclides of the elements 22 <= Z <= 25 (Ti-64, V-67, Cr-69, Mn-72). One event was registered consistent with Cr-70, and another one with Fe-75. A one-body Q(g) systematics is used to describe the production cross sections based on thermal evaporation from excited prefragments. The current results confirm those of our previous experiment with a Ge-76 beam: enhanced production cross sections for neutron-rich fragments near Z = 20.

引用

页数：10

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