Cross-shell excitation in two-proton knockout:: Structure of 52Ca

被引：119

作者：

Gade, A. ^{[1
]}

Janssens, R. V. F.

Bazin, D.

Broda, R.

Brown, B. A.

Campbell, C. M.

Carpenter, M. P.

Cook, J. M.

Deacon, A. N.

Dinca, D. -C.

Fornal, B.

Freeman, S. J.

Glasmacher, T.

Hansen, P. G.

Kay, B. P.

Mantica, P. F.

Mueller, W. F.

Terry, J. R.

Tostevin, J. A.

Zhu, S.

机构：

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

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

[3] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA

[4] Polish Acad Sci, Inst Phys Nucl, PL-31342 Krakow, Poland

[5] Univ Manchester, Schuster Lab, Sch Phys & Astron, Manchester M13 9PL, Lancs, England

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

[7] Univ Surrey, Dept Phys, Sch Elect & Phys Sci, Guildford GU2 7XH, Surrey, England

来源：

PHYSICAL REVIEW C | 2006年 / 74卷 / 02期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevC.74.021302

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：

The two-proton knockout reaction Be-9(Ti-54,Ca-52+gamma) has been studied at 72 MeV/nucleon. Besides the strong feeding of the Ca-52 ground state, the only other sizeable cross section proceeds to a 3(-) level at 3.9 MeV. There is no measurable direct yield to the first excited 2(+) state at 2.6 MeV. The results illustrate the potential of such direct reactions for exploring cross-shell proton excitations in neutron-rich nuclei and confirms the doubly-magic nature of Ca-52.

引用

页数：4

共 36 条

[1] The AME2003 atomic mass evaluation (II). Tables, graphs and references [J].

Audi, G ;

Wapstra, AH ;

Thibault, C .

NUCLEAR PHYSICS A, 2003, 729 (01) :337-676

[2] The S800 spectrograph [J].

Bazin, D ;

Caggiano, JA ;

Sherrill, BM ;

Yurkon, J ;

Zeller, A .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2003, 204 :629-633

[3] New direct reaction: Two-proton knockout from neutron-rich nuclei [J].

Bazin, D ;

Brown, BA ;

Campbell, CM ;

Church, JA ;

Dinca, DC ;

Enders, J ;

Gade, A ;

Glasmacher, T ;

Hansen, PG ;

Mueller, WF ;

Olliver, H ;

Perry, BC ;

Sherrill, BM ;

Terry, JR ;

Tostevin, JA .

PHYSICAL REVIEW LETTERS, 2003, 91 (01)

[4]

Broda R, 2005, ACTA PHYS POL B, V36, P1343

[5] The nuclear shell model towards the drip lines [J].

Brown, B. A. .

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, VOL 47, 2001, 47 (02) :517-599

[6]

Brown B. A., 1289 MSUNSCL

[7] Shell-model plus Hartree-Fock calculations for the neutron-rich Ca isotopes [J].

Brown, BA ;

Richter, WA .

PHYSICAL REVIEW C, 1998, 58 (04) :2099-2107

[8] Self-consistent Green's function method for nuclei and nuclear matter [J].

Dickhoff, WH ;

Barbieri, C .

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, VOL 52, NO 2, 2004, 52 (02) :377-496

[9] Reduced transition probabilities to the first 2+ state in 52,54,56Ti and development of shell closures at N=32,34 -: art. no. 041302 [J].

Dinca, DC ;

Janssens, RVF ;

Gade, A ;

Bazin, D ;

Broda, R ;

Brown, BA ;

Campbell, CM ;

Carpenter, MP ;

Chowdhury, P ;

Cook, JM ;

Deacon, AN ;

Fornal, B ;

Freeman, SJ ;

Glasmacher, T ;

Honma, M ;

Kondev, FG ;

Lecouey, JL ;

Liddick, SN ;

Mantica, PF ;

Mueller, WF ;

Olliver, H ;

Otsuka, T ;

Terry, JR ;

Tomlin, BA ;

Yoneda, K .

PHYSICAL REVIEW C, 2005, 71 (04)

[10]

Firestone R. B., 1997, Table of Isotopes

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