New shape isomer in the self-conjugate nucleus 72Kr -: art. no. 082502

被引：162

作者：

Bouchez, E ^{[1
]}

Matea, I

Korten, W

Becker, F

Blank, B

Borcea, C

Buta, A

Emsallem, A

de France, G

Genevey, J

Hannachi, F

Hauschild, K

Hürstel, A

Le Coz, Y

Lewitowicz, M

Lucas, R

Negoita, F

Santos, FD

Pantelica, D

Pinston, J

Rahkila, P

Rejmund, M

Stanoiu, M

Theisen, C

机构：

[1] CEA Saclay, DAPNIA, SPhN, F-91191 Gif Sur Yvette, France

[2] GANIL, F-14076 Caen, France

[3] CEN Bordeaux Gradignan, IN2P3, CNRS, F-33175 Gradignan, France

[4] IFIN HH, ROM-76900 Bucharest, Romania

[5] IPN Lyon, IN2P3, CNRS, F-68622 Villeurbanne, France

[6] Univ Grenoble 1, Inst Sci Nucl, IN2P3, CNRS, F-38026 St Martin Dheres, France

[7] Ctr Spectrometrie Nucl & Spectrometrie Masse, IN2P3, CNRS, F-91405 Orsay, France

[8] Univ Jyvaskyla, Dept Phys, 3, FIN-40014 Jyvaskyla, Finland

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.90.082502

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A new isomeric 0(+) state was identified as the first excited state in the self-conjugate (N=Z) nucleus Kr-72. By combining for the first time conversion-electron and gamma-ray spectroscopy with the production of metastable states in high-energy fragmentation, the electric-monopole decay of the new isomer to the ground state was established. The new 0(+) state is understood as the band head of the known prolate rotational structure, which strongly supports the interpretation that Kr-72 is one of the rare nuclei having an oblate-deformed ground state. This observation gives in fact the first evidence for a shape isomer in a N=Z nucleus.

引用

页数：4

共 25 条

[1] LISE-3 - A MAGNETIC SPECTROMETER WIEN FILTER COMBINATION FOR SECONDARY RADIOACTIVE BEAM PRODUCTION [J].

ANNE, R ;

MUELLER, AC .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1992, 70 (1-4) :276-285

[2] Investigation of prolate-oblate shape-coexistence in 74Kr [J].

Becker, F ;

Korten, W ;

Hannachi, F ;

Paris, P ;

Buforn, N ;

Chandler, C ;

Houry, M ;

Hübel, H ;

Jansen, A ;

Le Coz, Y ;

Liang, CF ;

Lopez-Martens, A ;

Lucas, R ;

Mergel, E ;

Regan, PH ;

Schönwasser, G ;

Theisen, C .

EUROPEAN PHYSICAL JOURNAL A, 1999, 4 (02) :103-105

[3]

BENGTSON R, 1988, NUCL STRUCTURE ZIRCO

[4] SELF-CONSISTENT STUDY OF TRIAXIAL DEFORMATIONS - APPLICATION TO THE ISOTOPES OF KR, SR, ZR AND MO [J].

BONCHE, P ;

FLOCARD, H ;

HEENEN, PH ;

KRIEGER, SJ ;

WEISS, MS .

NUCLEAR PHYSICS A, 1985, 443 (01) :39-63

[5]

BRUSSAARD PJ, 1977, SHELL MODEL APPLICAT, P56

[6] Evidence for a highly deformed oblate 0+ state in 3674Kr [J].

Chandler, C ;

Regan, PH ;

Pearson, CJ ;

Blank, B ;

Bruce, AM ;

Catford, WN ;

Curtis, N ;

Czajkowski, S ;

Gelletly, W ;

Grzywacz, R ;

Janas, Z ;

Lewitowicz, M ;

Marchand, C ;

Orr, NA ;

Page, RD ;

Petrovici, A ;

Reed, AT ;

Saint-Laurent, MG ;

Vincent, SM ;

Wadsworth, R ;

Warner, DD ;

Winfield, JS .

PHYSICAL REVIEW C, 1997, 56 (06) :R2924-R2928

[7] Observation of isomeric states in neutron deficient A ∼ 80 nuclei following the projectile fragmentation of 92Mo -: art. no. 044309 [J].

Chandler, C ;

Regan, PH ;

Blank, B ;

Pearson, CJ ;

Bruce, AM ;

Catford, WN ;

Curtis, N ;

Czajkowski, S ;

Dessagne, P ;

Fleury, A ;

Gelletly, W ;

Giovinazzo, J ;

Grzywacz, R ;

Janas, Z ;

Lewitowicz, M ;

Marchand, C ;

Miehé, C ;

Orr, NA ;

Page, RD ;

Pravikoff, MS ;

Reed, AT ;

Saint-Laurent, MG ;

Vincent, SM ;

Wadsworth, R ;

Warner, DD ;

Winfield, JS ;

Xu, F .

PHYSICAL REVIEW C, 2000, 61 (04) :14

[8] Alignment delays in the N = Z nuclei 72Kr, 76Sr, and 80Zr -: art. no. 132501 [J].

Fischer, SM ;

Lister, CJ ;

Balamuth, DP ;

Bauer, R ;

Becker, JA ;

Bernstein, LA ;

Carpenter, MP ;

Durell, J ;

Fotiades, N ;

Freeman, SJ ;

Garrett, PE ;

Hausladen, PA ;

Janssens, RVF ;

Jenkins, D ;

Leddy, M ;

Ressler, J ;

Schwartz, J ;

Svelnys, D ;

Sarantites, DG ;

Seweryniak, D ;

Varley, BJ ;

Wyss, R .

PHYSICAL REVIEW LETTERS, 2001, 87 (13)

[9] IDENTIFICATION OF EXCITED-LEVELS IN THE N=Z+1 NUCLEUS KR-73 [J].

FREUND, S ;

ALTMANN, J ;

BECKER, F ;

BURKARDT, T ;

EBERTH, J ;

FUNKE, I ;

GRAWE, H ;

HEESE, J ;

HERMKENS, U ;

KLUGE, H ;

MAIER, KH ;

MYLAEUS, T ;

PRADE, H ;

SKODA, S ;

TEICHERT, W ;

THOMAS, HG ;

WINTER, G ;

VANDERWERTH, A .

PHYSICS LETTERS B, 1993, 302 (2-3) :167-170

[10] DECAY PROPERTIES OF THE O-2(+) STATE AND SPIN-PARITY ASSIGNMENTS IN KR-78 [J].

GIANNATIEMPO, A ;

NANNINI, A ;

PEREGO, A ;

SONA, P ;

BORGE, MJG ;

TENGBLAD, O .

PHYSICAL REVIEW C, 1995, 52 (05) :2444-2447

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