OBSERVATION OF FOUR-QUASIPARTICLE BAND AND SIGNATURE SPLITTING FEATURES IN 160Tm

2008 ◽  
Vol 17 (supp01) ◽  
pp. 21-28 ◽  
Author(s):  
J. B. LU ◽  
D. YANG ◽  
L. SUN ◽  
L. L. WANG ◽  
H. D. WANG ◽  
...  
Keyword(s):  
High Spin ◽  
Gamma Ray ◽  
Spin States ◽  
Signature Splitting ◽  
Rotational Bands ◽  
High Spin States ◽  
Gamma Ray Spectroscopy ◽  
Quasiparticle Band

High-spin states of 160 Tm are studied via in-beam gamma-ray spectroscopy. Previously known rotational bands are confirmed. These bands feed into low-lying states which are enriched in this work. A four-quasiparticle band with configuration of πg7/2 ⊗ νh9/2 ⊗ ν(i13/2)2 is established. Signature splitting features of πh11/2⊗νi13/2 and πh11/2⊗νh9/2 bands are presented.

Gamma-Ray Spectroscopy inA≅40Nuclei via Heavy-Ion-Induced Reactions: High-Spin States inK41andCa41

1973 ◽  
Vol 31 (17) ◽  
pp. 1067-1070 ◽  
Author(s):  
P. Gorodetzky ◽  
J. J. Kolata ◽  
J. W. Olness ◽  
A. R. Poletti ◽  
E. K. Warburton
Keyword(s):  
High Spin ◽  
Gamma Ray ◽  
Heavy Ion ◽  
Spin States ◽  
High Spin States ◽  
Gamma Ray Spectroscopy

High spin states in 96Tc populated through the (α,n) reaction

1980 ◽  
Vol 58 (2) ◽  
pp. 174-190 ◽  
Author(s):  
H. A. Mach ◽  
M. W. Johns ◽  
J. V. Thompson
Keyword(s):  
Theoretical Model ◽  
High Spin ◽  
Spin Structure ◽  
Gamma Ray ◽  
Angular Distributions ◽  
Spin States ◽  
High Spin States ◽  
Gamma Coincidence ◽  
Electron Conversion ◽  
Conversion Coefficients

High spin states of 96Tc populated by the (α,n) reaction using alpha beams from 13 to 27 MeV have been studied. Gamma-ray energies and intensities, gamma–gamma coincidence probabilities, gamma-ray angular distributions, and electron conversion coefficients were determined at 18 MeV. In addition, some results taken at 14 MeV are reported.The high spin structure observed in this work includes the following levels: 49.3(6+), 318.8(6+), 574.7(7+), 926.9(9+), 946.5(8+), 1062.1(8+), 1138.8(8+), 1447.2(9+), 1702.8(10+), 1861.6(9+), 1922.3(11+), 2147.5(11+), 2213.5(10(+)), 2317.2(12+), 2396.8(11(+)), 2599.0((13)+), 2642.4((14)+), and 3020.1(12(+)).These experiments also clarify and extend the information obtained by previous workers. In particular, evidence is adduced for low-lying states at 0.0(7+), 34.3(4+), 45.3(5+), 120.3(3−), 177.0(5+), 226.2(2−), 227.0(4+), and 254.3(3+).The work identifies many other states of intermediate energy.Attenuation coefficients for states in 96Tc are calculated using a theoretical model.

High-spin states of rotational bands built upon νi13/2 in 166Lu

2000 ◽  
Vol 8 (1) ◽  
pp. 1-3 ◽  
Author(s):  
C. S. Lee ◽  
J. H. Ha ◽  
J. H. Lee ◽  
J. Y. Huh ◽  
J. C. Kim ◽  
...  
Keyword(s):  
High Spin ◽  
Spin States ◽  
Rotational Bands ◽  
High Spin States

A Kπ = 0− Octupole Band in 150Sm

1975 ◽  
Vol 53 (13) ◽  
pp. 1229-1235 ◽  
Author(s):  
J. V. Thompson ◽  
M. W. Johns ◽  
J. C. Waddington
Keyword(s):  
High Spin ◽  
Conversion Electron ◽  
Gamma Ray ◽  
Angular Distributions ◽  
Spin States ◽  
High Spin States ◽  
Gamma Coincidence

A study of the 148Nd(α, 2n)150Sm reaction has revealed the high spin states of a Kπ = 0− octupole band, the members of which become the yrast levels above spin 12. Gamma ray angular distributions, gamma–gamma coincidence, and conversion electron studies have established the levels of the octupole band at 1764.6(7−), 2232.1(9−), 2744.0(11−), and tentatively at 3293.0(13−) keV.

Gamma-ray spectroscopic studies on high-spin states inAs71andAs73using heavy-ion reactions

1977 ◽  
Vol 15 (5) ◽  
pp. 1742-1757 ◽  
Author(s):  
B. Heits ◽  
H. -G. Friederichs ◽  
A. Rademacher ◽  
K. O. Zell ◽  
P. von Brentano ◽  
...  
Keyword(s):  
High Spin ◽  
Gamma Ray ◽  
Heavy Ion ◽  
Spectroscopic Studies ◽  
Spin States ◽  
Heavy Ion Reactions ◽  
High Spin States

High-Spin States inNe20and Their Possible Classification into Rotational Bands

1972 ◽  
Vol 5 (6) ◽  
pp. 1995-2006 ◽  
Author(s):  
A. D. Panagiotou ◽  
H. E. Gove ◽  
S. Harar
Keyword(s):  
High Spin ◽  
Spin States ◽  
Rotational Bands ◽  
High Spin States

Levels in 148Tb excited by the (6,7Li,xn) and (10B,xn) reactions

1979 ◽  
Vol 57 (3) ◽  
pp. 358-367 ◽  
Author(s):  
N. C. Singhal ◽  
M. W. Johns
Keyword(s):  
High Spin ◽  
Internal Conversion ◽  
Gamma Ray ◽  
Angular Distributions ◽  
Spin States ◽  
High Spin States ◽  
Internal Conversion Coefficients ◽  
Conversion Coefficients ◽  
Γ Ray ◽  
Coincidence Measurements

High spin slates in 148Tb have been excited by means of 144Sm(6Li,2n), 144Sm(7Li,3n), and 142Nd(10B,4n) reactions and studied by γ-ray and electron measurements. Gamma-ray singles, excitation functions, angular distributions, internal conversion coefficients, and γ–γ coincidence measurements have been made. A seven-fold gamma–gamma cascade feeding the 9+ isomeric state in 148Tb and originating in a level 4137 keV above that state is strongly excited. The spin and parity assignments are made on the basis of angular distribution and internal conversion coefficients. On the basis of these measurements, the 1006 keV transition is E3 in character; the half-life of the 1006 keV (12−) level is established to be 25 ± 2 ns.These experiments also confirm the existence of a number of high spin states in 148Gd seen by earlier workers.

scholarly journals High spin structure of 155Dy

2019 ◽  
Vol 3 ◽  
pp. 114
Author(s):  
C. T. Papadopoulos ◽  
R. Vlastou ◽  
M. Serris ◽  
C. A. Kalfas ◽  
N. Fotiades ◽  
...  
Keyword(s):  
High Spin ◽  
Beam Energy ◽  
Spin Structure ◽  
Negative Parity ◽  
Spin States ◽  
Detailed Structure ◽  
Strongly Coupled ◽  
Rotational Bands ◽  
High Spin States ◽  
Coincidence Measurements

High spin states in 155Dy have been studied by γ-γ coincidence measurements via the 124Sn(36S, 5n)155Dy reaction at a beam energy of 155 MeV. Eight rotational bands have been populated and observed up to high spin (I<91/2).The band features have been analysed within the framework of the cranked shell model. The Ì13/2 neutron alignments and the h11/2 proton alignments are discussed. B(M1)/B(E2) ratios have also been extracted for the strongly coupled bands to deduce further information on the detailed structure of these bands. For the highest states (above spin 30) of the negative parity bands an irregularity in y-ray energies appears which is discussed in terms of band termination.

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