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Title: Experimental study of isomeric intruder 1 2 + states in At 197 , 203

Abstract

A newly observed isomeric intruder ½+ state [T½=3.5(6)ms] is identified in 203At using a gas-filled recoil separator and fusion-evaporation reactions. The isomer is depopulated through a cascade of E3 and mixed M1/E2 transitions to the 9/2 ground state, and it is suggested to originate from the π(s½)–1 configuration. In addition, the structures above the ½+ state in 203At and 197At are studied using in-beam γ-ray spectroscopy, recoil-decay tagging, and recoil-isomer decay tagging methods. As a result, the ½+ state is fed from 3/2+ and 5/2+ states, and the origin of these states are discussed.

Authors:
 [1];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [3];  [4];  [2];  [2];  [2];  [2];  [5];  [2];  [2];  [2];  [2];  [2] more »;  [2];  [2];  [2];  [2];  [2] « less
  1. Univ. of Jyvaskyla (Finland); Argonne National Lab. (ANL), Lemont, IL (United States)
  2. Univ. of Jyvaskyla (Finland)
  3. Univ. of Jyvaskyla (Finland); Univ. of Liverpool, Liverpool (United Kingdom)
  4. Royal Institute of Technology, Stockholm (Sweden); Univ. of Helsinki (Finland)
  5. The Univ. of Manchester, Manchester (United Kingdom)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
European Commission, Community Research and Development Information Service (CORDIS), Seventh Framework Programme (FP7); Academy of Finland, Centre of Excellence; USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1368565
Alternate Identifier(s):
OSTI ID: 1351042
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 95; Journal Issue: 4; 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

Auranen, K., Uusitalo, J., Juutinen, S., Badran, H., Bisso, F. Defranchi, Cox, D., Grahn, T., Greenlees, P. T., Herzan, A., Jakobsson, U., Julin, R., Konki, J., Leino, M., Lightfoot, A., Mallaburn, M., Neuvonen, O., Pakarinen, J., Papadakis, P., Partanen, J., Rahkila, P., Sandzelius, M., Saren, J., Scholey, C., Sorri, J., and Stolze, S. Experimental study of isomeric intruder 12+ states in At197,203. United States: N. p., 2017. Web. doi:10.1103/PhysRevC.95.044311.
Auranen, K., Uusitalo, J., Juutinen, S., Badran, H., Bisso, F. Defranchi, Cox, D., Grahn, T., Greenlees, P. T., Herzan, A., Jakobsson, U., Julin, R., Konki, J., Leino, M., Lightfoot, A., Mallaburn, M., Neuvonen, O., Pakarinen, J., Papadakis, P., Partanen, J., Rahkila, P., Sandzelius, M., Saren, J., Scholey, C., Sorri, J., & Stolze, S. Experimental study of isomeric intruder 12+ states in At197,203. United States. doi:10.1103/PhysRevC.95.044311.
Auranen, K., Uusitalo, J., Juutinen, S., Badran, H., Bisso, F. Defranchi, Cox, D., Grahn, T., Greenlees, P. T., Herzan, A., Jakobsson, U., Julin, R., Konki, J., Leino, M., Lightfoot, A., Mallaburn, M., Neuvonen, O., Pakarinen, J., Papadakis, P., Partanen, J., Rahkila, P., Sandzelius, M., Saren, J., Scholey, C., Sorri, J., and Stolze, S. Mon . "Experimental study of isomeric intruder 12+ states in At197,203". United States. doi:10.1103/PhysRevC.95.044311. https://www.osti.gov/servlets/purl/1368565.
@article{osti_1368565,
title = {Experimental study of isomeric intruder 12+ states in At197,203},
author = {Auranen, K. and Uusitalo, J. and Juutinen, S. and Badran, H. and Bisso, F. Defranchi and Cox, D. and Grahn, T. and Greenlees, P. T. and Herzan, A. and Jakobsson, U. and Julin, R. and Konki, J. and Leino, M. and Lightfoot, A. and Mallaburn, M. and Neuvonen, O. and Pakarinen, J. and Papadakis, P. and Partanen, J. and Rahkila, P. and Sandzelius, M. and Saren, J. and Scholey, C. and Sorri, J. and Stolze, S.},
abstractNote = {A newly observed isomeric intruder ½+ state [T½=3.5(6)ms] is identified in 203At using a gas-filled recoil separator and fusion-evaporation reactions. The isomer is depopulated through a cascade of E3 and mixed M1/E2 transitions to the 9/2– ground state, and it is suggested to originate from the π(s½)–1 configuration. In addition, the structures above the ½+ state in 203At and 197At are studied using in-beam γ-ray spectroscopy, recoil-decay tagging, and recoil-isomer decay tagging methods. As a result, the ½+ state is fed from 3/2+ and 5/2+ states, and the origin of these states are discussed.},
doi = {10.1103/PhysRevC.95.044311},
journal = {Physical Review C},
number = 4,
volume = 95,
place = {United States},
year = {2017},
month = {4}
}

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Works referenced in this record:

Prompt and delayed spectroscopy of At 199
journal, October 2010


Low-lying states of valence-hole nuclei in the 208 Pb region
journal, March 2011


Collective vibrations in odd-mass thallium isotopes
journal, March 1967


Behavior of intruder based states in light Bi and Tl isotopes: the study of 187Bi α decay
journal, May 1999

  • Batchelder, J. C.; Toth, K. S.; Bingham, C. R.
  • The European Physical Journal A, Vol. 5, Issue 1
  • DOI: 10.1007/s100500050255

The Clover: a new generation of composite Ge detectors
journal, August 1999

  • Duchêne, G.; Beck, F. A.; Twin, P. J.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 432, Issue 1
  • DOI: 10.1016/S0168-9002(99)00277-6

First observation of excited states in 197At: the onset of deformation in neutron-deficient astatine nuclei
journal, May 1999

  • Smith, M. B.; Chapman, R.; Cocks, J. F. C.
  • The European Physical Journal A, Vol. 5, Issue 1
  • DOI: 10.1007/s100500050254

Shape coexistence in 185Tl and 187Tl — investigation of the deformed minima
journal, April 1995


Positive-parity states in some odd-mass bismuth isotopes
journal, September 1969


Absolute transmission and separation properties of the gas-filled recoil separator RITU
journal, October 2011

  • Sarén, J.; Uusitalo, J.; Leino, M.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 654, Issue 1
  • DOI: 10.1016/j.nima.2011.06.068

Shape-changing particle decays of Bi 185 and structure of the lightest odd-mass Bi isotopes
journal, May 2004


Early Onset of Ground State Deformation in Neutron Deficient Polonium Isotopes
journal, February 2011


Experimental study of 1 2 + isomers in At 199 , 201
journal, August 2014


Coexistence in odd-mass nuclei
journal, December 1983


γ-ray spectroscopy of At 197
journal, October 2008


GEANT Monte Carlo simulations for the GREAT spectrometer
journal, November 2004

  • Andreyev, A. N.; Butler, P. A.; Page, R. D.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 533, Issue 3
  • DOI: 10.1016/j.nima.2004.07.205

γ -ray spectroscopy of Bi 191 , 193
journal, June 2004


First observation of superdeformed states in 191Bi
journal, March 2015


Spectroscopy of the proton drip-line nucleus 203 Fr
journal, May 2013


γ decay of excited states in 198 Rn identified using correlated radioactive decay
journal, February 1999


Recoil-decay tagging study of 205 Fr
journal, January 2012


Collectivity of Po 196 at low spin
journal, July 2009


The GREAT triggerless total data readout method
journal, June 2001

  • Lazarus, I.; Appelbe, E. E.; Butler, P. A.
  • IEEE Transactions on Nuclear Science, Vol. 48, Issue 3
  • DOI: 10.1109/23.940120

Spectroscopy of At 201 including the observation of a shears band and the 29 / 2 + isomeric state
journal, February 2015


α decay of the very neutron-deficient isotopes 197 199 Fr
journal, April 2013


Decays of Pb 1 9 4 , 1 9 5 , 1 9 6
journal, May 1982


Investigations into the alpha-decay of 195At
journal, April 2003


Energy levels in 197Tl populated in the Tl reaction
journal, April 1977


Measurements on prototype Ge and BGO detectors for the Eurogam array
journal, March 1992

  • Beausang, C. W.; Forbes, S. A.; Fallon, P.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 313, Issue 1-2
  • DOI: 10.1016/0168-9002(92)90084-H

Gas-filled recoil separator for studies of heavy elements
journal, May 1995

  • Leino, M.; Äystö, J.; Enqvist, T.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 99, Issue 1-4
  • DOI: 10.1016/0168-583X(94)00573-7

Grain—A Java data analysis system for Total Data Readout
journal, October 2008

  • Rahkila, P.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 595, Issue 3
  • DOI: 10.1016/j.nima.2008.08.039

Nuclear Data Sheets for A = 207
journal, March 2011


Evaluation of theoretical conversion coefficients using BrIcc
journal, May 2008

  • Kibédi, T.; Burrows, T. W.; Trzhaskovskaya, M. B.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 589, Issue 2
  • DOI: 10.1016/j.nima.2008.02.051

Laser spectroscopy studies of intruder states in Bi 193 , 195 , 197
journal, August 2016


A new test for random events of an exponential distribution
journal, July 2000


Tables of attenuation coefficients for angular distribution of gamma rays from partially aligned nuclei
journal, January 1974


The GREAT spectrometer
journal, May 2003

  • Page, R. D.; Andreyev, A. N.; Appelbe, D. E.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 204
  • DOI: 10.1016/S0168-583X(02)02143-2

Alpha-decay studies of the new isotopes 191At and 193At
journal, August 2003


α decay studies of very neutron-deficient francium and radium isotopes
journal, February 2005


α -decay studies of the francium isotopes 198 Fr and 199 Fr
journal, June 2013


Low-lying structure of light radon isotopes
journal, December 2002


γ -ray and decay spectroscopy of 194 , 195 , 196 At
journal, November 2013


The GASP array
journal, January 1993


High-spin states in At 2 0 1 , 2 0 3 and the systematic behavior of Z = 85 isotopes
journal, September 1983


Deformation and mixing of coexisting shapes in neutron-deficient polonium isotopes
journal, November 2015


Electromagnetic transition probabilities between the low-lying states of 203Tl, 205Tl and 209Bi
journal, January 1973


Nuclear Data Sheets for A = 199
journal, January 2007


α-decay properties of neutron-deficient polonium and radon nuclei
journal, April 1993


Detailed spectroscopy of Bi 193
journal, October 2015


α Decay of Neutron-Deficient Odd Bi Nuclei: Shell-Model Intruder States in Tl and Bi Isotopes
journal, April 1985