1ST IDENTIFICATION OF EXCITED-STATES IN NB-84-86

被引：34

作者：

GROSS, CJ

LIEB, KP

RUDOLPH, D

BENTLEY, MA

GELLETLY, W

PRICE, HG

SIMPSON, J

BLUMENTHAL, DJ

ENNIS, PJ

LISTER, CJ

WINTER, C

DURELL, JL

VARLEY, BJ

SKEPPSTEDT, O

RASTIKERDAR, S

机构：

[1] SERC, DARESBURY LAB, WARRINGTON WA4 4AD, CHESHIRE, ENGLAND

[2] YALE UNIV, AW WRIGHT NUCL STRUCT LAB, NEW HAVEN, CT 06511 USA

[3] UNIV MANCHESTER, SCHUSTER LAB, MANCHESTER M13 9PL, LANCS, ENGLAND

[4] CHALMERS UNIV TECHNOL, DEPT PHYS, S-41296 GOTHENBURG, SWEDEN

[5] ISFAHAN UNIV, DEPT PHYS, ESFAHAN, IRAN

来源：

NUCLEAR PHYSICS A | 1991年 / 535卷 / 01期

基金：

美国能源部;

关键词：

SI-28(NI-58; NP); E=195; MEV; NI-58(S-32; P-ALPHA); E=110; N3P); 120; 130; CA-40(CR-50; E=170; MEASURED E-GAMMA; I-GAMMA; (RECOIL)GAMMA-; GAMMA-GAMMA-; (X-RAY)-GAMMA-COIN; 84,86NB DEDUCED LEVELS; 85NB DEDUCED LEVELS; J; PI; LOG FT; ENRICHED TARGETS;

D O I：

10.1016/0375-9474(91)90523-9

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 on the observation of excited states in the niobium isotope with masses 84, 85 and 86. These nuclei lie in the shape transition region known to occur in nuclei with 35 less-than-or-equal-to Z less-than-or-equal-to 40 and N = 45. Unambiguous identification was achieved by detecting gamma-rays in coincidence with mass-separated recoils produced in heavy-ion fusion reactions. Rotational bands were observed in 84Nb and 85Nb which show decoupling schemes similar to those in the neighbouring nuclei. A rotational model was used to interpret these bands and the quasiparticle configurations involved. Two sequences of transitions were observed in 86Nb, at least one of which appears to be a rotational band.

引用

页码：203 / 220

页数：18

共 41 条

[1] QUASI-PARTICLE SPECTRA NEAR THE YRAST LINE [J].

BENGTSSON, R ;

FRAUENDORF, S .

NUCLEAR PHYSICS A, 1979, 327 (01) :139-171

[2] INTERPRETATION OF BACKBENDING IN TERMS OF THE CROSSING OF THE GROUND-STATE BAND WITH AN ALIGNED 2-QUASI-PARTICLE BAND [J].

BENGTSSON, R ;

FRAUENDORF, S .

NUCLEAR PHYSICS A, 1979, 314 (01) :27-36

[3] SIDE-FEEDING TIMES AND LEVEL LIFETIMES MEASURED IN THE REACTION FE-54(S-32,3P)Y-83 [J].

CRISTANCHO, F ;

LIEB, KP ;

HEESE, J ;

GROSS, CJ ;

FIEBER, W ;

OSIPOWICZ, T ;

ULBIG, S ;

BHARUTHRAM, K ;

SKODA, S ;

EBERTH, J ;

DEWALD, A ;

VONBRENTANO, P .

NUCLEAR PHYSICS A, 1989, 501 (01) :118-136

[4]

CRISTANCHO F, UNPUB NUCL PHYS A

[5]

DELLANEGRA S, 1982, Z PHYS A-HADRON NUCL, V308, P243, DOI 10.1007/BF01418286

[6] GAMMA-RAY SPECTROSCOPY OF NB-89 [J].

DIANA, BJ ;

DEBOER, FWN ;

FIELDS, CA .

ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 1982, 306 (02) :171-175

[7] DECAY OF 3-PARTICLE HIGH-SPIN STATES IN Y-85 [J].

DILLER, R ;

LIEB, KP ;

LUHMANN, L ;

OSIPOWICZ, T ;

SONA, P ;

WORMANN, B ;

CLEEMANN, L ;

EBERTH, J .

ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 1985, 321 (04) :659-669

[8]

EBERTH J, 1988, NUCLEAR STRUCTURE ZI

[9] ON THE COEXISTENCE OF OBLATE AND PROLATE DEFORMED BANDS IN ZR-83 [J].

FIEBER, W ;

BHARUTHRAM, K ;

HEESE, J ;

CRISTANCHO, F ;

GROSS, CJ ;

LIEB, KP ;

SKODA, S ;

EBERTH, J .

ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 1989, 332 (04) :363-370

[10] THE OBSERVATION OF MO84 [J].

GELLETLY, W ;

BENTLEY, MA ;

PRICE, HG ;

SIMPSON, J ;

GROSS, CJ ;

DURELL, JL ;

VARLEY, BJ ;

SKEPPSTEDT, O ;

RASTIKERDAR, S .

PHYSICS LETTERS B, 1991, 253 (3-4) :287-291

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