Observation of the O+2 state in 44S

被引：49

作者：

Grévy, S ^{[1
]}

Negoita, F

Stefan, I

Achouri, NL

Angélique, JC

Bastin, B

Borcea, R

Buta, A

Daugas, JM

De Oliveira, F

Giarmana, O

Jollet, C

Laurent, B

Lazar, M

Liénard, E

Maréchal, F

Mrázek, J

Pantelica, D

Penionzhkevich, Y

Piétri, S

Sorlin, O

Stanoiu, M

Stodel, C

St-Laurent, MG

机构：

[1] ENSICAEN, CNRS, Phys Corpusculaire Lab, IN2P3, F-14050 Caen, France

[2] Univ Caen, F-14050 Caen, France

[3] IFIN HH, Inst Atom Phys, Bucharest, Romania

[4] CEA, CNRS, DSM, Grand Accelerateur Natl Ions Lourds, F-14076 Caen, France

[5] CEA, DIF, DPTA, PN, F-91680 Bruyeres Le Chatel, France

[6] Univ Strasbourg 1, IReS, IN2P3, F-67037 Strasbourg, France

[7] Acad Sci Czech Republ, Inst Nucl Phys, CZ-25068 Rez, Czech Republic

[8] Joint Inst Nucl Res, FLNR, Dubna 141980, Moscow, Russia

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

[10] Inst Phys Nucl, CNRS, IN2P3, F-91406 Orsay, France

来源：

EUROPEAN PHYSICAL JOURNAL A | 2005年 / 25卷 / Suppl 1期

关键词：

D O I：

10.1140/epjad/i2005-06-179-8

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：

We report preliminary results on the observation of the isomeric 02 state in 44 S. This state, populated in the fragmentation of a Ca-48 beam, is located at 1365 +/- 1. keV and has a half-life of 2.3 +/- 0.3 mu s. The observation of this isomer is the first experimental evidence of shape coexistence in S-44 which was predicted by various theoretical approaches. In particular, we found a good agreement with shell model calculations.

引用

页码：111 / 113

页数：3

共 12 条

[1] The N=28 shell closure;: from N = Z to the neutron drip line [J].

Caurier, E ;

Nowacki, F ;

Poves, A .

NUCLEAR PHYSICS A, 2004, 742 (1-2) :14-26

[2] Search for particle-hole excitations across the N=28 shell gap in 45,46Ar nuclei [J].

Dombrádi, Z ;

Sohler, D ;

Sorlin, O ;

Azaiez, F ;

Nowacki, F ;

Stanoiu, M ;

Penionzhkevich, YE ;

Timár, J ;

Amorini, F ;

Baiborodin, D ;

Bauchet, A ;

Becker, F ;

Belleguic, M ;

Borcea, C ;

Bourgeois, C ;

Dlouhy, Z ;

Donzaud, C ;

Duprat, J ;

Elekes, Z ;

Guillemaud-Mueller, D ;

Ibrahim, F ;

Lewitowicz, M ;

Lopez, MJ ;

Lucas, R ;

Lukyanov, SM ;

Maslov, V ;

Moore, C ;

Mrazek, J ;

Saint-Laurent, MG ;

Sarazin, E ;

Scarpaci, JA ;

Sletten, G ;

Stodel, C ;

Taylor, M ;

Theisen, C ;

Voltolini, G .

NUCLEAR PHYSICS A, 2003, 727 (3-4) :195-206

[3] Collectivity in S-44 [J].

Glasmacher, T ;

Brown, BA ;

Chromik, MJ ;

Cottle, PD ;

Fauerbach, M ;

Ibbotson, RW ;

Kemper, KW ;

Morrissey, DJ ;

Scheit, H ;

Sklenicka, DW ;

Steiner, M .

PHYSICS LETTERS B, 1997, 395 (3-4) :163-168

[4] Beta-decay half-lives at the N=28 shell closure [J].

Grévy, S ;

Angélique, JC ;

Baumann, P ;

Borcea, C ;

Buta, A ;

Canchel, G ;

Catford, WN ;

Courtin, S ;

Daugas, JM ;

de Oliveira, F ;

Dessagne, P ;

Dlouhy, Z ;

Knipper, A ;

Kratz, KL ;

Lecolley, FR ;

Lecouey, JL ;

Lehrsenneau, G ;

Lewitowicz, M ;

Liénard, E ;

Lukyanov, S ;

Maréchal, F ;

Miehé, C ;

Mrazek, J ;

Negoita, F ;

Orr, NA ;

Pantelica, D ;

Penionzhkevich, Y ;

Péter, J ;

Pfeiffer, B ;

Pietri, S ;

Poirier, E ;

Sorlin, O ;

Stanoiu, M ;

Stefan, I ;

Stodel, C ;

Timis, C .

PHYSICS LETTERS B, 2004, 594 (3-4) :252-259

[5]

LALAZISSIS GA, 1999, PHYS REV C, V60, DOI UNSP 014316

[6] Evolution of the N=20 and N=28 shell closures neutron-rich nuclei [J].

Péru, S ;

Girod, M ;

Berger, JF .

EUROPEAN PHYSICAL JOURNAL A, 2000, 9 (01) :35-47

[7] Quadrupole collectivity in N≈28 nuclei with the angular momentum projected generator coordinate method -: art. no. 024304 [J].

Rodríguez-Guzmán, R ;

Egido, JL ;

Robledo, LM .

PHYSICAL REVIEW C, 2002, 65 (02) :14

[8] Shape coexistence and the N=28 shell closure far from stability [J].

Sarazin, F ;

Savajols, H ;

Mittig, W ;

Nowacki, F ;

Orr, NA ;

Ren, Z ;

Roussel-Chomaz, P ;

Auger, G ;

Baiborodin, D ;

Belozyorov, AV ;

Borcea, C ;

Caurier, E ;

Dlouhy, Z ;

Gillibert, A ;

Lalleman, AS ;

Lewitowicz, M ;

Lukyanov, SM ;

de Oliveira, F ;

Penionzhkevich, YE ;

Ridikas, D ;

Sakuraï, W ;

Tarasov, O ;

de Vismes, A .

PHYSICAL REVIEW LETTERS, 2000, 84 (22) :5062-5065

[9] New region of deformation: The neutron-rich sulfur isotopes [J].

Scheit, H ;

Glasmacher, T ;

Brown, BA ;

Brown, JA ;

Cottle, PD ;

Hansen, PG ;

Harkewicz, R ;

Hellstrom, M ;

Ibbotson, RW ;

Jewell, JK ;

Kemper, KW ;

Morrissey, DJ ;

Steiner, M ;

Thirolf, P ;

Thoennessen, M .

PHYSICAL REVIEW LETTERS, 1996, 77 (19) :3967-3970

[10] Shape evolution in heavy sulfur isotopes and erosion of the N=28 shell closure -: art. no. 054302 [J].

Sohler, D ;

Dombrádi, Z ;

Timár, J ;

Sorlin, O ;

Azaiez, F ;

Amorini, F ;

Belleguic, M ;

Bourgeois, C ;

Donzaud, C ;

Duprat, J ;

Guillemaud-Mueller, D ;

Ibrahim, F ;

Scarpaci, JA ;

Stanoiu, M ;

Lopez, MJ ;

Saint-Laurent, MG ;

Becker, F ;

Sarazin, F ;

Stodel, C ;

Voltolini, G ;

Lukyanov, SM ;

Maslov, V ;

Penionzhkevich, YE ;

Girod, M ;

Péru, S ;

Nowacki, F ;

Sletten, G ;

Lucas, R ;

Theisen, C ;

Baiborodin, D ;

Dlouhy, Z ;

Mrazek, J ;

Borcea, C ;

Bauchet, A ;

Moore, CJ ;

Taylor, MJ .

PHYSICAL REVIEW C, 2002, 66 (05) :7

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