skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

This content will become publicly available on July 31, 2020

Title: Decoupled and semi-decoupled bands in Hg 197 and Hg 199

Abstract

Here, the structure of decoupled positive-parity and semidecoupled negative-parity bands up to high spin in 197,199Hg has been studied using multinucleon transfer reactions with the Gammasphere array. A positive-parity band in 199Hg with the (vi 13/2) 3 decoupled configuration that deexcites to levels in the negative-parity sequences is newly established. The semidecoupled sequences in both isotopes are extended to higher spin. Rotation-aligned angular momenta and crossing frequencies determined from experiment are in fair agreement with those from cranking calculations. Finally, a transition from oblate collective rotation at low spin to triaxial noncollective shapes at high spin is indicated.

Authors:
 [1];  [2];  [1];  [3];  [4];  [5];  [5];  [5];  [5];  [6];  [5];  [5]
  1. Univ. of Mumbai (India)
  2. Univ. of Mumbai (India); Univ. of Massachusetts, Lowell, MA (United States)
  3. Univ. of Massachusetts, Lowell, MA (United States)
  4. Univ. of North Carolina, Chapel Hill, NC (United States); Duke Univ., Durham, NC (United States)
  5. Argonne National Lab. (ANL), Argonne, IL (United States)
  6. Univ. of Massachusetts, Lowell, MA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1560057
Alternate Identifier(s):
OSTI ID: 1545945
Grant/Contract Number:  
AC02-06CH11357; FG02-94ER40848; FG02-94ER40834; FG02-97ER41033; FG02-97ER41041
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 100; Journal Issue: 1; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Negi, D., Tandel, S. K., Chauhan, P., Chowdhury, P., Janssens, R. V. F., Carpenter, M. P., Khoo, T. L., Kondev, F. G., Lauritsen, T., Lister, C. J., Seweryniak, D., and Zhu, S. Decoupled and semi-decoupled bands in Hg197 and Hg199. United States: N. p., 2019. Web. doi:10.1103/PhysRevC.100.014329.
Negi, D., Tandel, S. K., Chauhan, P., Chowdhury, P., Janssens, R. V. F., Carpenter, M. P., Khoo, T. L., Kondev, F. G., Lauritsen, T., Lister, C. J., Seweryniak, D., & Zhu, S. Decoupled and semi-decoupled bands in Hg197 and Hg199. United States. doi:10.1103/PhysRevC.100.014329.
Negi, D., Tandel, S. K., Chauhan, P., Chowdhury, P., Janssens, R. V. F., Carpenter, M. P., Khoo, T. L., Kondev, F. G., Lauritsen, T., Lister, C. J., Seweryniak, D., and Zhu, S. Wed . "Decoupled and semi-decoupled bands in Hg197 and Hg199". United States. doi:10.1103/PhysRevC.100.014329.
@article{osti_1560057,
title = {Decoupled and semi-decoupled bands in Hg197 and Hg199},
author = {Negi, D. and Tandel, S. K. and Chauhan, P. and Chowdhury, P. and Janssens, R. V. F. and Carpenter, M. P. and Khoo, T. L. and Kondev, F. G. and Lauritsen, T. and Lister, C. J. and Seweryniak, D. and Zhu, S.},
abstractNote = {Here, the structure of decoupled positive-parity and semidecoupled negative-parity bands up to high spin in 197,199Hg has been studied using multinucleon transfer reactions with the Gammasphere array. A positive-parity band in 199Hg with the (vi13/2)3 decoupled configuration that deexcites to levels in the negative-parity sequences is newly established. The semidecoupled sequences in both isotopes are extended to higher spin. Rotation-aligned angular momenta and crossing frequencies determined from experiment are in fair agreement with those from cranking calculations. Finally, a transition from oblate collective rotation at low spin to triaxial noncollective shapes at high spin is indicated.},
doi = {10.1103/PhysRevC.100.014329},
journal = {Physical Review C},
number = 1,
volume = 100,
place = {United States},
year = {2019},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on July 31, 2020
Publisher's Version of Record

Save / Share:

Works referenced in this record:

High-spin excitation modes in even Hg nuclei
journal, October 1974


Rotation-aligned bands in Hg 196
journal, September 1983


Identification of high-spin states in the stable nucleus 195 Pt
journal, July 2011


The high-spin structure of 158Er: A theoretical study
journal, May 1990


High-spin states in even Hg nuclei and rotation alignment in Hg 198
journal, April 1977


Nuclear structure of Pt 200 from in-beam conversion-electron and γ -ray spectroscopy
journal, May 1988


High-spin negative-parity states in 200Hg from 200mAu decay and 198Pt(α, 2nγ) reaction spectroscopy
journal, December 1972


Spectroscopy of195Hg and196Hg
journal, September 1991

  • Mehta, D.; Agarwal, Y. K.; Blume, K. P.
  • Zeitschrift für Physik A Hadrons and Nuclei, Vol. 339, Issue 3
  • DOI: 10.1007/BF01560632

Higher Order Corrections to the Cranking Model
journal, May 1965


Evidence for triaxial shapes in Pt nuclei
journal, February 1976


Excitation of high-spin states in 190, 191, 192, 193, 194hg through (α, xn) reactions
journal, August 1975


Detailed band structures in 189Hg and 190Hg
journal, September 1994


High-spin negative parity states in doubly even Hg, Pt and Os nuclei
journal, April 1974


Aligned bands coupled to different shapes in 186Hg
journal, November 1983


Levels in Even-Even Hg 192 , Hg 194 , Hg 196 , and Hg 198
journal, October 1968


Collective Oblate Rotation at High Spins in Neutron-Rich Hf 180
journal, October 2008


Isomers and oblate rotation in Pt isotopes: Delineating the limit for collectivity at high spins
journal, November 2015


Semi-decoupled bands in the even Hg isotopes
journal, February 1975


Identification of the missing rotation-aligned
journal, February 1981


ESCL8R and LEVIT8R: Software for interactive graphical analysis of HPGe coincidence data sets
journal, July 1995

  • Radford, D. C.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 361, Issue 1-2
  • DOI: 10.1016/0168-9002(95)00183-2

Decoupled bands in odd-mass mercury isotopes
journal, July 1974


High-Spin States and Coriolis-Decoupled Bands in Hg 1 9 0 1 9 4
journal, April 1974


The triplets in 190–196Hg
journal, April 1983


Use of DCO ratios for spin determination in γ-γ coincidence measurements
journal, February 1989

  • Krämer-Flecken, A.; Morek, T.; Lieder, R. M.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 275, Issue 2
  • DOI: 10.1016/0168-9002(89)90706-7

Rotation-aligned isomer and oblate collectivity in Pt 196
journal, November 2015


Spectroscopy of 200Hg after incomplete fusion reaction
journal, October 1999

  • Görgen, A.; Hübel, H.; Ward, D.
  • The European Physical Journal A, Vol. 6, Issue 2
  • DOI: 10.1007/s100500050328

Band crossings in weakly deformed 190Hg
journal, August 1982


Structure of odd- A Pt isotopes along the line of stability
journal, July 2019


Collective rotation and vibration in neutron-rich Hf 180 , 182 nuclei
journal, March 2007


High-spin levels in Pt 191 and Pt 193 and the triaxial rotor model
journal, January 1977


Interpretation of the 21-ns Isomer in Hg 190 as ( ν i 13 2 ) 2 from a g -Factor Measurement
journal, September 1980


Investigation of level energies and B(E2) values for rotation-aligned bands in Hg isotopes
journal, June 1978


High-spin structure of 190–194Hg and the cranked shell model
journal, May 1986


Two-quasiparticle and rotation-aligned structures in 190Pt, 192Pt and 194Pt
journal, May 1976


The GAMMASPHERE
journal, December 1990


Inelastic and transfer reactions in 92Mo+255 MeV 60Ni collisions studied by γγ coincidences
journal, November 1990


Non-axial deformations and the odd parity states in the even Pt and Hg isotopes
journal, March 1977