CONFIGURATION ASSIGNMENT OF THE POSITIVE-PARITY STRUCTURES IN 108Ag

2011 ◽  
Vol 20 (11) ◽  
pp. 2351-2359 ◽  
Author(s):  
C. LIU ◽  
S. Y. WANG ◽  
B. QI ◽  
D. P. SUN ◽  
C. J. XU ◽  
...  
Keyword(s):  
High Spin ◽  
Beam Energy ◽  
Positive Parity ◽  
Spin States ◽  
High Spin States ◽  
Parity Band ◽  
Configuration Assignment ◽  
Higher Spins ◽  
Band Crossing ◽  
Positive Parity Band

The high-spin states of 108 Ag have been studied by the in-beam γ spectroscopy with the reaction 104 Ru (7 Li ,3n)108 Ag at a beam energy of 33 MeV. The previously known positive-parity band structures have been extended up to higher spins. Their configurations are discussed based on alignments, band-crossing frequencies, and B(M1)/B(E2) ratios.

scholarly journals High Spin Structure of 122Xe

2020 ◽  
Vol 6 ◽  
pp. 140
Author(s):  
M. Serris ◽  
Et al.
Keyword(s):  
High Spin ◽  
Beam Energy ◽  
Spin Structure ◽  
Positive Parity ◽  
Spectroscopic Methods ◽  
Spin States ◽  
High Spin States ◽  
Parity Band ◽  
Γ Ray ◽  
Positive Parity Band

High spin states in the isotope 122Xe  were populated using the reaction 96Zn(30Si,2n)122Xe at a beam energy of 135 MeV. The subsequent γ-ray deexcitation was studied using γ-ray spectroscopic methods. The analysis of γ-γ coincidences has revealed two new structures of competing dipole and quadrupole transitions. The highest states of a positive parity band provide characteristics consistent with an approach to band termination.

Study of high spin states in 149Tb observed by the (10B,3n) reaction

1979 ◽  
Vol 57 (11) ◽  
pp. 1959-1968 ◽  
Author(s):  
N. C. Singhal ◽  
M. W. Johns ◽  
J. V. Thompson
Keyword(s):  
High Spin ◽  
Energy Levels ◽  
Negative Parity ◽  
Positive Parity ◽  
Angular Distributions ◽  
Spin States ◽  
Core Nucleus ◽  
High Spin States ◽  
Parity Band ◽  
Positive Parity Band

Energy levels in 149Tb have been studied by the 142Nd (10B,3n) reaction using 54 MeV 10B beams from the McMaster University FN accelerator. Excitation functions, angular distributions, prompt γ–γ coincidence, electron conversion, and linear polarization measurements were obtained. On the basis of these measurements we have identified two rotaition-aligned πh11/2 bands, a negative parity band up to spin 27/2−, and a positive parity band up to spin 27/2+. The energy spacings between levels in these bands strongly resemble those in the ground state and the 3− octupole band of the adjacent 148Gd core nucleus. Other high spin positive parity states up to spin of 41/2 are also observed. These high spin states show some evidence of rotational structure in 14 9Tb.

scholarly journals High Spin States in 193Hg

2020 ◽  
Vol 4 ◽  
pp. 170
Author(s):  
N. Fotiades ◽  
Et al.
Keyword(s):  
Excited States ◽  
High Spin ◽  
Normal Level ◽  
Beam Energy ◽  
Spin Structure ◽  
Spin States ◽  
Tandem Accelerator ◽  
High Spin States ◽  
Γ Rays ◽  
Γ Ray

The high-spin structure of 193Hg was investigated by in-beam γ-ray spectro­scopic techniques. The tandem accelerator at Daresbury Laboratory, U. K., was used to populate excited states of 193Hg through the reaction 150Nd(48Ca,5n)193Hg at a beam energy of 213 MeV and the EUROGAM detector array was used to de­ tect the γ-rays emitted by the deexciting nuclei. The normal level scheme has been further extended and a new band has been observed. In addition two new ΔI=1 structures of competing dipole and quadrupole transitions were found which will be discussed in detail.

scholarly journals Population of a low-spin positive-parity band from high-spin intruder states in 177Au: The two-state mixing effect

2020 ◽  
Vol 806 ◽  
pp. 135488 ◽  
Author(s):  
M. Venhart ◽  
M. Balogh ◽  
A. Herzáň ◽  
J.L. Wood ◽  
F.A. Ali ◽  
...  
Keyword(s):  
High Spin ◽  
Positive Parity ◽  
Mixing Effect ◽  
Parity Band ◽  
State Mixing ◽  
Positive Parity Band ◽  
Intruder States

Evidence for yrast positive-parity high-spin states in odd-odd72As

1998 ◽  
Vol 57 (1) ◽  
pp. 97-103 ◽  
Author(s):  
J. Döring ◽  
D. Pantelicǎ ◽  
A. Petrovici ◽  
B. R. S. Babu ◽  
J. H. Hamilton ◽  
...  
Keyword(s):  
High Spin ◽  
Positive Parity ◽  
Spin States ◽  
High Spin States

High spin states in the ground and β-bands of 156Dy and the band-crossing interpretation of back bending

1974 ◽  
Vol 219 (1) ◽  
pp. 141-156 ◽  
Author(s):  
H.R. Andrews ◽  
D. Ward ◽  
R.L. Graham ◽  
J.S. Geiger
Keyword(s):  
High Spin ◽  
Spin States ◽  
High Spin States ◽  
Band Crossing

scholarly journals Nuclear shape coexistence in 194Hg

2019 ◽  
Vol 7 ◽  
pp. 156
Author(s):  
N. Fotiades ◽  
S. Harissopulos ◽  
C. A. Kalfas ◽  
S. Kossionides ◽  
C. T. Papadopoulos ◽  
...  
Keyword(s):  
Excitation Energy ◽  
High Spin ◽  
Beam Energy ◽  
Shape Change ◽  
Nuclear Shape ◽  
Shape Coexistence ◽  
Spin States ◽  
High Spin States

High spin states in the isotope 194Hg were populated using the 150Nd (48Ca,4n) reaction at a beam energy of 213 MeV. A sequence of dip ole transitions has been observed above 8 MeV excitation energy. Cross-over transitions have also been identified. An interpretation connecting this sequence to a nuclear shape change is attempted. A comparison with similar structures in the neighbouring Hg isotopes is also attempted.

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.

High Spin States in the Odd–Odd 150Eu Nucleus

1997 ◽  
Vol 12 (16) ◽  
pp. 2791-2808 ◽  
Author(s):  
J. M. Chatterjee ◽  
Somapriya Basu ◽  
U. Datta Pramanik ◽  
S. Bhattacharya ◽  
R. K. Chattopadhyay ◽  
...  
Keyword(s):  
High Spin ◽  
Positive Parity ◽  
Spin States ◽  
Phonon Coupling ◽  
Axially Symmetric ◽  
Rotational Bands ◽  
Isomeric Level ◽  
High Spin States ◽  
Symmetric Rotor ◽  
Rotor Core

High spin rotational bands in the odd–odd 150Eu nucleus, produced in the 148Nd(7Li,5n) reaction, were investigated by in-beam γ spectroscopy. Seven bands above the 588.8 keV (45 ns) isomeric level were observed. Probable single- and double-octupole-phonon coupling states were identified. Two positive parity bands are interpreted in terms of two quasiparticles (a proton and a neutron) coupled to an axially symmetric rotor core. Otherwise, the rest of the high spin levels are described by multiparticle–hole excitations.

Quasiparticle Driving Effect on Shape of 87Nb Soft Nucleus

1997 ◽  
Vol 06 (01) ◽  
pp. 177-189 ◽  
Author(s):  
S. Wen ◽  
H. Zheng ◽  
L. K. Zhang ◽  
S. G. Li ◽  
P. K. Weng ◽  
...  
Keyword(s):  
Excitation Energy ◽  
High Spin ◽  
Beam Energy ◽  
Nuclear Shape ◽  
Angular Distributions ◽  
Spin States ◽  
Excitation Functions ◽  
High Spin States ◽  
Γ Rays

The high spin states of 87 Nb have been studied by using the 58 Ni (32 S , 3p)87 Nb reaction at beam energy 95–105 MeV and the reaction 58 Ni (35 Cl , 2pα) at 124 MeV. γ-γ coincidence relations, angular distributions of γ-rays, excitation functions and DCO ratios were measured. High spin states in 87 Nb have been established up to spin of 37/2ℏ and excitation energy of 7 MeV. CSM calculation was carried out with parameters of configuration dependence of nuclear shape. The nature and configuration of every band in 87 Nb are discussed.

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