First observation of the scissors mode in a gamma-soft nucleus: The case of Pt-196

被引：93

作者：

vonBrentano, P

Eberth, J

Enders, J

Esser, L

Herzberg, RD

Huxel, N

Meise, H

vonNeumannCosel, P

Nicolay, N

Pietralla, N

Prade, H

Reif, J

Richter, A

Schlegel, C

Schwengner, R

Skoda, S

Thomas, HG

Wiedenhover, I

Winter, G

Zilges, A

机构：

[1] TH DARMSTADT, INST KERNPHYS, D-64289 DARMSTADT, GERMANY

[2] FORSCHUNGSZENTRUM ROSSENDORF EV, INST KERN & HADROENPHYS, D-01314 DRESDEN, GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.76.2029

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A nuclear resonance fluorescence experiment with one of the newly developed highly efficient EUROBALL cluster detectors has been performed on the gamma-soft nucleus Pt-196. Magnetic dipole excitations were observed between 2 and 3.5 MeV excitation energy. They are interpreted as the main fragments of the scissors mode based on the measured excitation strengths and branching ratios. A strong gamma decay, which we believe to be an E2 decay of the scissors mode to the 2(1)(+) state, is observed. It allows an extraction of the effective boson quadrupole charges in the interacting boson model.

引用

页码：2029 / 2032

页数：4

共 45 条

[1] MEASURED MAGNETIC-MOMENTS OF 2(1)(+) STATES IN PT-190-198 AND INTERACTING BOSON MODEL DESCRIPTION OF M1 SYSTEMATICS IN THE PLATINUM ISOTOPES [J].

ANDERSSEN, SS ;

STUCHBERY, AE ;

KUYUCAK, S .

NUCLEAR PHYSICS A, 1995, 593 (02) :212-232

[2]

AUERHAMMER J, 1993, NUCL PHYS A, V553, pC841, DOI 10.1016/0375-9474(93)90708-6

[3] 1ST OBSERVATION OF SCISSORS MODE STATES IN AN ODD-MASS NUCLEUS [J].

BAUSKE, I ;

ARIAS, JM ;

VONBRENTANO, P ;

FRANK, A ;

FRIEDRICHS, H ;

HEIL, RD ;

HERZBERG, RD ;

HOYLER, F ;

VANISACKER, P ;

KNEISSL, U ;

MARGRAF, J ;

PITZ, HH ;

WESSELBORG, C ;

ZILGES, A .

PHYSICAL REVIEW LETTERS, 1993, 71 (07) :975-978

[4] NEW MAGNETIC DIPOLE EXCITATION MODE STUDIED IN THE HEAVY DEFORMED NUCLEUS GD-156 BY INELASTIC ELECTRON-SCATTERING [J].

BOHLE, D ;

RICHTER, A ;

STEFFEN, W ;

DIEPERINK, AEL ;

IUDICE, NL ;

PALUMBO, F ;

SCHOLTEN, O .

PHYSICS LETTERS B, 1984, 137 (1-2) :27-31

[5] STUDY OF THE MIXED-SYMMETRY J-PI = 2+ STATES IN GD-156 WITH INELASTIC ELECTRON-SCATTERING [J].

BOHLE, D ;

RICHTER, A ;

HEYDE, K ;

VANISACKER, P ;

MOREAU, J ;

SEVRIN, A .

PHYSICAL REVIEW LETTERS, 1985, 55 (16) :1661-1664

[6] EVIDENCE FOR A NEW SYMMETRY IN NUCLEI - STRUCTURE OF PT-196 AND O(6) LIMIT [J].

CIZEWSKI, JA ;

CASTEN, RF ;

SMITH, GJ ;

STELTS, ML ;

KANE, WR ;

BORNER, HG ;

DAVIDSON, WF .

PHYSICAL REVIEW LETTERS, 1978, 40 (03) :167-170

[7] LEVEL STRUCTURE OF PT-196 [J].

CIZEWSKI, JA ;

CASTEN, RF ;

SMITH, GJ ;

MACPHAIL, MR ;

STELTS, ML ;

KANE, WR ;

BORNER, HG ;

DAVIDSON, WF .

NUCLEAR PHYSICS A, 1979, 323 (2-3) :349-391

[8]

Dieperink A. E. L., 1983, Progress in Particle and Nuclear Physics, V9, P121, DOI 10.1016/0146-6410(83)90016-9

[9] DEVELOPMENT OF A COMPOSITE GE DETECTOR FOR EUROBALL [J].

EBERTH, J ;

VONBRENTANO, P ;

TEICHERT, W ;

THOMAS, HG ;

WERTH, AVD ;

LIEDER, RM ;

JAGER, H ;

KAMMERLING, H ;

KUTCHIN, D ;

MAIER, KH ;

BERST, M ;

GUTKNECHT, D ;

HENCK, R .

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, 1992, 28 :495-504

[10] DEVELOPMENT OF COMPOSITE GE DETECTORS FOR EUROBALL [J].

EBERTH, J ;

VONBRENTANO, P ;

TEICHERT, W ;

MYLAEUS, T ;

LIEDER, RM ;

GAST, W ;

HEBBINGHAUS, G ;

JAGER, H ;

MAIER, KH ;

GRAWE, H ;

KLUGE, H ;

SCHWALM, D ;

GERL, J ;

HUBEL, H ;

HENCK, R ;

GUTKNECHT, D .

NUCLEAR PHYSICS A, 1990, 520 :C669-C676

← 1 2 3 4 5 →