Lifetime measurement of the six-quasiparticle isomer in 140Nd and evidence for an isomer above the 19/2+ state in 139Nd

被引：17

作者：

Ferraton, M. ^{[1
,2
]}

Bourgain, R. ^{[1
,2
]}

Petrache, C. M. ^{[1
,2
]}

Verney, D. ^{[1
,2
]}

Ibrahim, F. ^{[1
,2
]}

de Sereville, N. ^{[1
,2
]}

Franchoo, S. ^{[1
,2
]}

Lebois, M. ^{[1
,2
]}

Viet, C. Phan ^{[1
,2
]}

Sagui, L. ^{[1
,2
]}

Stefan, I. ^{[1
,2
]}

Clavelin, J. F. ^{[1
,2
]}

Vilmay, M. ^{[1
,2
]}

机构：

[1] Univ Paris 11, F-91406 Orsay, France

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

来源：

EUROPEAN PHYSICAL JOURNAL A | 2008年 / 35卷 / 02期

关键词：

27.60.+j 90 < ; < 149 ; 21.60.-n Nuclear structure models and methods; 21.10.Tg Lifetimes, widths;

D O I：

10.1140/epja/i2007-10534-y

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 lifetime of the recently discovered six-quasiparticle (6-qp) isomer in Nd-140 has been measured using the Te-126(O-18, 4n) reaction and the pulsed-beam technique at the Institut de Physique Nucleaire (IPN) Orsay. The deduced lifetime of the 6-qp isomer in Nd-140 of 1.23(7)mu s supports the 20(+) spin-parity assignment to the isomeric state which is based on a spherical configuration that coexists with the triaxial bands observed in this spin range. Evidence for delayed components for the transitions below the 19/2(+) state in Nd-139 was observed, with an apparent half-life of 272(4)ns.

引用

页码：167 / 170

页数：4

共 3 条

[1] Lifetime measurement of the six-quasiparticle isomer in 140Nd and evidence for an isomer above the 19/2+ state in 139Nd
M. Ferraton
R. Bourgain
C. M. Petrache
D. Verney
F. Ibrahim
N. de Séréville
S. Franchoo
M. Lebois
C. Phan Viet
L. Sagui
I. Stefan
J. F. Clavelin
M. Vilmay
The European Physical Journal A, 2008, 35 : 167 - 170
[2] Six-quasiparticle isomer in 140Nd
Petrache, C. M.
Bark, R. A.
Murray, S. T. H.
Fantuzi, M.
Lawrie, E. A.
Lang, S.
Lawrie, J. J.
Maliage, S. M.
Mengoni, D.
Mullins, S. M.
Ntshangase, S. S.
Petrache, D.
Ramashidzha, T. M.
Ragnarsson, I.
PHYSICAL REVIEW C, 2006, 74 (03):
[3] EFFECT OF CHEMICAL STATE ON LIFETIME OF 24-2ND ISOMER OF NB90
COOPER, JA
HOLLANDER, JM
RASMUSSEN, JO
PHYSICAL REVIEW LETTERS, 1965, 15 (16) : 680 - +

← 1 →