LARGE-DEFORMATION OF THE VERY NEUTRON-RICH NUCLEUS MG-32 FROM INTERMEDIATE-ENERGY COULOMB-EXCITATION

被引：670

作者：

MOTOBAYASHI, T

IKEDA, Y

ANDO, Y

IEKI, K

INOUE, M

IWASA, N

KIKUCHI, T

KUROKAWA, M

MORIYA, S

OGAWA, S

MURAKAMI, H

SHIMOURA, S

YANAGISAWA, Y

NAKAMURA, T

WATANABE, Y

ISHIHARA, M

TERANISHI, T

OKUNO, H

CASTEN, RF

机构：

[1] RIKEN,WAKO,SAITAMA 35101,JAPAN

[2] UNIV TOKYO,DEPT PHYS,TOKYO 113,JAPAN

[3] BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973

来源：

PHYSICS LETTERS B | 1995年 / 346卷 / 1-2期

关键词：

COULOMB EXCITATION; RADIOACTIVE BEAM; B(E2-O+-]2(+)) OF MG-32;

D O I：

10.1016/0370-2693(95)00012-A

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Coulomb excitation of a very neutron-rich nucleus Mg-32 to its 2(+) State was studied using an unstable nuclear beam of Mg-32 at 49.2 MeV/u with a Pb-208 target. The B(E2) value of 454 +/- 78 e(2)fm(4) was extracted by a coupled channel analysis. The value is in good agreement with recent predictions. It confirms a large deformation for Mg-32 suggested by the low excitation energy of the 2(+) state, and points to the vanishing of the N = 20 shell gap.

引用

页码：9 / 14

页数：6

共 19 条

[1] ELASTIC-SCATTERING OF AR-40 ON NI-60, SN-120 AND PB-208 AT 44 MEV/U
ALAMANOS, N
AUGER, F
BARRETTE, J
BERTHIER, B
FERNANDEZ, B
GASTEBOIS, J
PAPINEAU, L
DOUBRE, H
MITTIG, W
[J]. PHYSICS LETTERS B, 1984, 137 (1-2) : 37 - 40
[2] COULOMB-EXCITATION OF GIANT-RESONANCES IN PB-208 BY E=84 MEV/NUCLEON O-17 PROJECTILES
BARRETTE, J
ALAMANOS, N
AUGER, F
FERNANDEZ, B
GILLIBERT, A
HOREN, DJ
BEENE, JR
BERTRAND, FE
AUBLE, RL
BURKS, BL
DELCAMPO, JG
HALBERT, ML
SAYER, RO
MITTIG, W
SCHUTZ, Y
HAAS, B
VIVIEN, JP
[J]. PHYSICS LETTERS B, 1988, 209 (2-3) : 182 - 186
[3] COULOMB DISSOCIATION AS A SOURCE OF INFORMATION ON RADIATIVE-CAPTURE PROCESSES OF ASTROPHYSICAL INTEREST
BAUR, G
BERTULANI, CA
REBEL, H
[J]. NUCLEAR PHYSICS A, 1986, 458 (01) : 188 - 204
[4] CAMPI X, 1973, NUCL PHYS A, V251, P193
[5] VALENCE CORRELATION SCHEMES AND NEW SIGNATURES OF NUCLEAR-STRUCTURE - A SIMPLE GLOBAL PHENOMENOLOGY FOR B(E2/21+-]01+) VALUES
CASTEN, RF
ZAMFIR, NV
[J]. PHYSICAL REVIEW LETTERS, 1993, 70 (04) : 402 - 405
[6] VANISHING OF THE SHELL GAP IN N = 20 NEUTRON-RICH NUCLEI
FUKUNISHI, N
OTSUKA, T
SEBE, T
[J]. PHYSICS LETTERS B, 1992, 296 (3-4) : 279 - 284
[7] Fukunishi N., COMMUNICATION
[8] GUILLEMAUDMUELL.D, 1984, NUCL PHYS A, V426, P37
[9] DETERMINATION OF THE N-13(P,GAMMA)O-14 REACTION-RATE THROUGH THE COULOMB BREAK-UP OF A O-14 RADIOACTIVE BEAM
KIENER, J
LEFEBVRE, A
AGUER, P
BACRI, CO
BIMBOT, R
BOGAERT, G
BORDERIE, B
CLAPIER, F
COC, A
DISDIER, D
FORTIER, S
GRUNBERG, C
KRAUS, L
LINCK, I
PASQUIER, G
RIVET, MF
STLAURENT, F
STEPHAN, C
TASSANGOT, L
THIBAUD, JP
[J]. NUCLEAR PHYSICS A, 1993, 552 (01) : 66 - 81
[10] THE RIKEN RADIOACTIVE BEAM FACILITY
KUBO, T
ISHIHARA, M
INABE, N
KUMAGAI, H
TANIHATA, I
YOSHIDA, K
NAKAMURA, T
OKUNO, H
SHIMOURA, S
ASAHI, K
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1992, 70 (1-4) : 309 - 319

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