Persistence of the N=28 shell closure in neutron-rich nuclei

被引：63

作者：

Cottle, PD ^{[1
]}

Kemper, KW ^{[1
]}

机构：

[1] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA

来源：

PHYSICAL REVIEW C | 1998年 / 58卷 / 06期

关键词：

D O I：

10.1103/PhysRevC.58.3761

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：

It is argued that the recently measured 2(1)(+) state of the N=28 isotope S-44 is more collective than that of the N=20 isotope S-36 because of well-known shifts in the relative energies of the d(3/2), and s(1/2) proton orbits between N=20 and 28 and not because of the weakening or collapse of the N=28 shell closure in the neutron-rich region. It is proposed that a Coulomb excitation measurement of the 2(1)(+) state in Si-42 would provide the best determination of whether the N=28 shell closure persists in this neutron-rich region. [S0556-2813(98)03312-3].

引用

页码：3761 / 3762

页数：2

共 13 条

[1] EVEN-PARITY-HOLE STATES IN F-7/2-SHELL NUCLEI [J].

BANSAL, RK ;

FRENCH, JB .

PHYSICS LETTERS, 1964, 11 (02) :145-148

[2] SI-34 - A NEW DOUBLY MAGIC NUCLEUS [J].

BAUMANN, P ;

HUCK, A ;

KLOTZ, G ;

KNIPPER, A ;

WALTER, G ;

MARGUIER, G ;

RAVN, HL ;

RICHARDSERRE, C ;

POVES, A ;

RETAMOSA, J .

PHYSICS LETTERS B, 1989, 228 (04) :458-462

[3] RELATION BETWEEN THE Z = 64 SHELL CLOSURE AND THE ONSET OF DEFORMATION AT N = 88-90 [J].

CASTEN, RF ;

WARNER, DD ;

BRENNER, DS ;

GILL, RL .

PHYSICAL REVIEW LETTERS, 1981, 47 (20) :1433-1436

[4] QUASIHOLE ASPECT OF HOLE STRENGTH DISTRIBUTIONS IN ODD POTASSIUM AND CALCIUM ISOTOPES [J].

DOLL, P ;

WAGNER, GJ ;

KNOPFLE, KT ;

MAIRLE, G .

NUCLEAR PHYSICS A, 1976, 263 (02) :210-236

[5] 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

[6] Quadrupole collectivity in 32,34,36,38Si and the N=20 shell closure [J].

Ibbotson, RW ;

Glasmacher, T ;

Brown, BA ;

Chen, L ;

Chromik, MJ ;

Cottle, PD ;

Fauerbach, M ;

Kemper, KW ;

Morrissey, DJ ;

Scheit, H ;

Thoennessen, M .

PHYSICAL REVIEW LETTERS, 1998, 80 (10) :2081-2084

[7] LARGE-DEFORMATION OF THE VERY NEUTRON-RICH NUCLEUS MG-32 FROM INTERMEDIATE-ENERGY COULOMB-EXCITATION [J].

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 .

PHYSICS LETTERS B, 1995, 346 (1-2) :9-14

[8] SEPARATION ENERGIES BETWEEN THE 2S1/2-1 AND 1D3/2-1 HOLE STATES IN THE ODD POTASSIUM ISOTOPES [J].

PELLEGRINI, F .

PHYSICAL REVIEW C, 1979, 19 (06) :2412-2413

[9] THE ONSET OF DEFORMATION AT THE N=20 NEUTRON SHELL CLOSURE FAR FROM STABILITY [J].

POVES, A ;

RETAMOSA, J .

PHYSICS LETTERS B, 1987, 184 (04) :311-315

[10] TRANSITION-PROBABILITY, B(E2)UP, FROM THE GROUND TO THE 1ST-EXCITED 2+ STATE OF EVEN-EVEN NUCLIDES [J].

RAMAN, S ;

MALARKEY, CH ;

MILNER, WT ;

NESTOR, CW ;

STELSON, PH .

ATOMIC DATA AND NUCLEAR DATA TABLES, 1987, 36 (01) :1-96

← 1 2 →