Experimental study of isomeric intruder 12+ states in At197,203

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.

doi:10.1103/PhysRevC.95.044311

Title: Experimental study of isomeric intruder ${\frac{1}{2}}^{+}$ states in ${}^{197, 203}{At}$

Abstract

A newly observed isomeric intruder ½⁺ state [T_½=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(s_½)^–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:

Auranen, K. ^[1]; Uusitalo, J. ^[2]; Juutinen, S. ^[2]; Badran, H. ^[2]; Bisso, F. Defranchi ^[2]; Cox, D. ^[2]; Grahn, T. ^[2]; Greenlees, P. T. ^[2]; Herzan, A. ^[3]; Jakobsson, U. ^[4]; Julin, R. ^[2]; Konki, J. ^[2]; Leino, M. ^[2]; Lightfoot, A. ^[2]; Mallaburn, M. ^[5]; Neuvonen, O. ^[2]; Pakarinen, J. ^[2]; Papadakis, P. ^[2]; Partanen, J. ^[2]; Rahkila, P. ^[2] more »

Univ. of Jyvaskyla (Finland); Argonne National Lab. (ANL), Lemont, IL (United States)
Univ. of Jyvaskyla (Finland)
Univ. of Jyvaskyla (Finland); Univ. of Liverpool, Liverpool (United Kingdom)
Royal Institute of Technology, Stockholm (Sweden); Univ. of Helsinki (Finland)
The Univ. of Manchester, Manchester (United Kingdom)

Publication Date:: 2017-04-10

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)

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.

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                    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.  https://doi.org/10.1103/PhysRevC.95.044311

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                    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.  https://doi.org/10.1103/PhysRevC.95.044311.  https://www.osti.gov/servlets/purl/1368565.

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@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 referencing / citing this record:

Prompt and delayed spectroscopy of ${}^{203}{At}$ : Observation of a shears band and a $29 / 2^{+}$ isomeric state
journal, February 2018

Auranen, K.; Uusitalo, J.; Juutinen, S.
Physical Review C, Vol. 97, Issue 2
DOI: 10.1103/physrevc.97.024301

Charge radii and electromagnetic moments of ${}^{195 - 211}{At}$
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Cubiss, J. G.; Barzakh, A. E.; Seliverstov, M. D.
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DOI: 10.1103/physrevc.97.054327

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

Abstract

Citation Formats

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

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

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

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

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

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

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

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

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

Nuclear Data Sheets for A = 207 journal, March 2011

Evaluation of theoretical conversion coefficients using BrIcc journal, May 2008

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

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

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

The GREAT triggerless total data readout method conference, January 2000

Early onset of ground-state deformation in the neutron-deficient polonium isotopes text, January 2010

Prompt and delayed spectroscopy of At 203 : Observation of a shears band and a 29 / 2 + isomeric state journal, February 2018

Charge radii and electromagnetic moments of At 195 – 211 journal, May 2018

Title: Experimental study of isomeric intruder ${\frac{1}{2}}^{+}$ states in ${}^{197, 203}{At}$

Prompt and delayed spectroscopy of ${}^{199}{At}$
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

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

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

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

Shape-changing particle decays of ${}^{185}{Bi}$ 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 ${\frac{1}{2}}^{+}$ isomers in ${}^{199, 201}{At}$
journal, August 2014

Coexistence in odd-mass nuclei
journal, December 1983

γ-ray spectroscopy of ${}^{197}{At}$
journal, October 2008

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

$γ$ -ray spectroscopy of ${}^{191, 193}{Bi}$
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 ${}^{196}{Po}$ at low spin
journal, July 2009

The GREAT triggerless total data readout method
journal, June 2001

Spectroscopy of ${}^{201}{At}$ 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 ${}^{194, 195, 196}{Pb}$
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

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

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

Nuclear Data Sheets for A = 207
journal, March 2011

Evaluation of theoretical conversion coefficients using BrIcc
journal, May 2008

Laser spectroscopy studies of intruder states in ${}^{193, 195, 197}{Bi}$
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

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 ${}^{201, 203}{At}$ 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 ${}^{193}{Bi}$
journal, October 2015

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

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

The GREAT triggerless total data readout method
conference, January 2000

Early onset of ground-state deformation in the neutron-deficient polonium isotopes
text, January 2010

Prompt and delayed spectroscopy of ${}^{203}{At}$ : Observation of a shears band and a $29 / 2^{+}$ isomeric state
journal, February 2018

Charge radii and electromagnetic moments of ${}^{195 - 211}{At}$
journal, May 2018