Laser Spectroscopy of Niobium Fission Fragments: First Use of Optical Pumping in an Ion Beam Cooler Buncher

被引：68

作者：

Cheal, B. ^{[1
]}

Baczynska, K. ^{[4
]}

Billowes, J. ^{[1
]}

Campbell, P. ^{[1
]}

Charlwood, F. C. ^{[1
]}

Eronen, T. ^{[3
]}

Forest, D. H. ^{[4
]}

Jokinen, A. ^{[3
]}

Kessler, T. ^{[3
]}

Moore, I. D. ^{[3
]}

Reponen, M. ^{[3
]}

Rothe, S. ^{[2
]}

Rueffer, M. ^{[4
]}

Saastamoinen, A. ^{[3
]}

Tungate, G. ^{[4
]}

Aysto, J. ^{[3
]}

机构：

[1] Univ Manchester, Manchester M13 9PL, Lancs, England

[2] Johannes Gutenberg Univ Mainz, Inst Phys, D-55128 Mainz, Germany

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

[4] Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 102卷 / 22期

基金：

芬兰科学院;

关键词：

NEUTRON-RICH YTTRIUM; ISOTOPE-SHIFTS; DEFORMATION; SR-96; SR-97; ZR-98; ZR-99; ISOMERS; NUCLEI; ONSET;

D O I：

10.1103/PhysRevLett.102.222501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A new method of optical pumping in an ion beam cooler buncher has been developed to selectively enhance ionic metastable state populations. The technique permits the study of elements previously inaccessible to laser spectroscopy and has been applied here to the study of Nb. Model independent mean-square charge radii and nuclear moments have been studied for (90,90 m,91,91 m,92,93,99,101,103)Nb to cover the region of the N=50 shell closure and N approximate to 60 sudden onset of deformation. The increase in mean-square charge radius is observed to be less than that for Y, with a substantial degree of beta softness observed before and after N=60.

引用

页数：4

共 19 条

[1] Development and applications of the IGISOL technique [J].

Äystö, J .

NUCLEAR PHYSICS A, 2001, 693 (1-2) :477-494

[2] NUCLEAR CORE DENSITIES, ISOTOPE SHIFTS, AND THE PARAMETRIZATION OF THE DROPLET MODEL [J].

BERDICHEVSKY, D ;

TONDEUR, F .

ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 1985, 322 (01) :141-147

[3] Model independent determination of the spin of the 180Ta naturally occurring isomer [J].

Bissell, M. L. ;

Baczynska, K. ;

Billowes, J. ;

Campbell, P. ;

Cheal, B. ;

Eronen, T. ;

Forest, D. H. ;

Gardner, M. D. ;

Moore, I. D. ;

Tordoff, B. ;

Tungate, G. ;

Aysto, J. .

PHYSICAL REVIEW C, 2006, 74 (04)

[4] Laser spectroscopy of cooled zirconium fission fragments -: art. no. 082501 [J].

Campbell, P ;

Thayer, HL ;

Billowes, J ;

Dendooven, P ;

Flanagan, KT ;

Forest, DH ;

Griffith, JAR ;

Huikari, J ;

Jokinen, A ;

Moore, R ;

Nieminen, A ;

Tungate, G ;

Zemlyanoi, S ;

Aystö, J .

PHYSICAL REVIEW LETTERS, 2002, 89 (08) :082501/1-082501/4

[5] The shape transition in the neutron-rich yttrium isotopes and isomers [J].

Cheal, B. ;

Gardner, M. D. ;

Avgoulea, M. ;

Billowes, J. ;

Bissell, M. L. ;

Campbell, P. ;

Eronen, T. ;

Flanagan, K. T. ;

Forest, D. H. ;

Huikari, J. ;

Jokinen, A. ;

Marsh, B. A. ;

Moore, I. D. ;

Nieminen, A. ;

Penttila, H. ;

Rinta-Antila, S. ;

Tordoff, B. ;

Tungate, G. ;

Aysto, J. .

PHYSICS LETTERS B, 2007, 645 (2-3) :133-137

[6] ISOTOPE-SHIFTS IN ATOMIC SPECTRUM OF XENON AND NUCLEAR DEFORMATION EFFECTS [J].

FISCHER, W ;

HUHNERMANN, H ;

KROMER, G ;

SCHAFER, HJ .

ZEITSCHRIFT FUR PHYSIK, 1974, 270 (02) :113-120

[7] Precision mass measurements of neutron-rich yttrium and niobium isotopes [J].

Hager, U. ;

Jokinen, A. ;

Elomaa, V.-V. ;

Eronen, T. ;

Hakala, J. ;

Kankainen, A. ;

Rahaman, S. ;

Rissanen, J. ;

Moore, I. D. ;

Rinta-Antila, S. ;

Saastamoinen, A. ;

Sonoda, T. ;

Aysto, J. .

NUCLEAR PHYSICS A, 2007, 793 :20-39

[8] First precision mass measurements of refractory fission fragments -: art. no. 042504 [J].

Hager, U ;

Eronen, T ;

Hakala, J ;

Jokinen, A ;

Kolhinen, VS ;

Kopecky, S ;

Moore, I ;

Nieminen, A ;

Oinonen, M ;

Rinta-Antila, S ;

Szerypo, J ;

Äystö, J .

PHYSICAL REVIEW LETTERS, 2006, 96 (04)

[9]

KING W, 1984, ISOTOPE SHIFTS ATOMI, P12114

[10] Shape trends and triaxiality in neutron-rich odd-mass Y and Nb isotopes [J].

Luo, YX ;

Rasmussen, JO ;

Stefanescu, I ;

Gelberg, A ;

Hamilton, JH ;

Ramayya, AV ;

Hwang, JK ;

Zhu, SJ ;

Gore, PM ;

Fong, D ;

Jones, EF ;

Wu, SC ;

Lee, IY ;

Ginter, TN ;

Ma, WC ;

Ter-Akopian, GM ;

Daniel, AV ;

Stoyer, MA ;

Donangelo, R .

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 2005, 31 (11) :1303-1327

← 1 2 →