scholarly journals HIGH SPIN STRUCTURE OF 173Os

2020 ◽  
Vol 2 ◽  
pp. 281
Author(s):  
R. Vlastou ◽  
C. T. Papadopoulos ◽  
C. A. Kalfas ◽  
S. Kossionides ◽  
L. Hildingsson ◽  
...  
Keyword(s):  
High Spin ◽  
Spin Structure ◽  
Spin States ◽  
Detailed Structure ◽  
High Spin States ◽  
Γ Rays ◽  
Coincidence Measurements

High-spin states in 173Os have been studied by γ-γ coincidence measurements following the 146Nd(32S,5n)173Os reaction. Four main sequences have been identified as the two signature branches of the bands built an the [642]5/2+ and [523]5/2- Nilsson states. Multi-polarity assignements have been derived utilizing the directional correlation (DCO) ratios aa well as the anisotropies of the γ-rays. B(M1)/B(E2) ratios have also been extracted to deduce farther information an the detailed structure of the bands

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.

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.

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.

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 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.

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.

ISOMER SPECTROSCOPY AT RI BEAM LINE IN RCNP

2010 ◽  
Vol 25 (21n23) ◽  
pp. 1951-1954 ◽  
Author(s):  
A. ODAHARA ◽  
A. TAKASHIMA ◽  
M. SUGA ◽  
K. TAJIRI ◽  
K. KURATA ◽  
...  
Keyword(s):  
Cross Section ◽  
High Spin ◽  
Event Detection ◽  
Fusion Reaction ◽  
Beam Line ◽  
Low Energy ◽  
Spin States ◽  
High Spin States ◽  
Γ Rays ◽  
Ri Beam

Experiments based on the isomer-spectroscopy method were performed using the secondary beam line at RCNP, Osaka University. Recently, a new γ-ray spectroscopy method was established using fusion reaction induced by low-energy RI beam. This method enables us to study high-spin states of nuclei in wider mass region where it is difficult to populate them by using the combination of stable beams and stable targets. This method works well although low production of nuclei, because (1) the combination of beams and targets can be selected with large-reaction cross section and (2) high-S/N measurement can be performed by the event-by-event detection to select the events correlated with RI beam, which reduces background γ rays, competing with γ rays emitted from fusion products. As the first step, high-spin states of 142 Pr were studied using fusion reaction induced by low-energy 17 N RI beam. Large cross section was obtained by the 130 Te (17 N ,5 n ) reaction with 4.9 MeV/u 17 N beam. Event selection, which was carried out by the event-by-event detection with low-beam intensity of 2×104 pps, enables high-S/N measurement.

scholarly journals Multipolarity of quasicontinuum γ-rays from collective high-spin states in 152Dy

1987 ◽  
Vol 183 (3-4) ◽  
pp. 277-281 ◽  
Author(s):  
H.J. Riezebos ◽  
A. Balanda ◽  
J. Dudek ◽  
J. van Klinken ◽  
W. Nazarewicz ◽  
...  
Keyword(s):  
High Spin ◽  
Spin States ◽  
High Spin States ◽  
Γ Rays

scholarly journals Decay properties of high spin states in Mn

2019 ◽  
Vol 14 ◽  
pp. 89
Author(s):  
M. Axiotis ◽  
A. Gadea ◽  
N. Märginean ◽  
S. M. Lenzi ◽  
D. R. Napoli ◽  
...  
Keyword(s):  
High Spin ◽  
Large Scale ◽  
Spin States ◽  
Model Calculations ◽  
Electromagnetic Decay ◽  
High Spin States ◽  
Decay Properties ◽  
Doppler Shift Attenuation ◽  
The Mean ◽  
Coincidence Measurements

The electromagnetic decay properties of high spin states in 52Mn have been studied through various experiments with the GASP and EUROBALL arrays plus the ISIS charged-particle detector, the Neutron-Wall and the Recoil Filter Detector. From 7-7-particles coincidence measurements, spins and parities of these states have been determined and using the Doppler-shift attenuation method the mean life of some of these states have been determined. These results are compared with large scale shell-model calculations in the full fp shell.

DESCRIPTION OF HIGH SPIN STATES

1980 ◽  
Vol 41 (C10) ◽  
pp. C10-143-C10-154 ◽  
Author(s):  
A. Faessler
Keyword(s):  
High Spin ◽  
Spin States ◽  
High Spin States
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