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Title: β -delayed neutron emission from Ga 85

Abstract

Here, decay of 85Ga was studied by means of β-neutron-γ spectroscopy. A pure beam of 85Ga was produced at the Holifield Radioactive Ion Beam Facility using a resonance ionization laser ion source and a high-resolution electromagnetic separator. The β-delayed neutron emission probability was measured for the first time, yielding 70(5)%. An upper limit of 0.1% for β-delayed two-neutron emission was also experimentally established for the first time. A detailed decay scheme including absolute γ-ray intensities was obtained. Lastly, results are compared with theoretical β-delayed emission models.

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [3];  [2];  [4];  [4]; ORCiD logo [2];  [5];  [6];  [1];  [1];  [7]; ORCiD logo [2];  [4];  [8];  [9];  [10]
  1. Univ. of Warsaw (Poland)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States); Joint Institute for Nuclear Physics and Application, Oak Ridge, TN (United States)
  4. Univ. of Tennessee, Knoxville, TN (United States)
  5. Univ. of California, Berkeley, CA (United States)
  6. Vanderbilt Univ., Nashville, TN (United States)
  7. Campbell University, Buies Creek, NC (United States)
  8. Mississippi State Univ., Mississippi State, MS (United States)
  9. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Joint Institute for Nuclear Physics and Application, Oak Ridge, TN (United States); Univ. of Warsaw (Poland)
  10. Louisiana State Univ., Baton Rouge, LA (United States)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1528700
Alternate Identifier(s):
OSTI ID: 1437210
Grant/Contract Number:  
AC05-00OR22725; FG02-96ER40983; FG05-88ER40407; SC00144448; AC05-06OR23100; AC02-05CH11231; NA0002132; FG-05-88ER40407; SC00-144448
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 97; Journal Issue: 5; 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

Miernik, Krzysztof, Rykaczewski, Krzysztof P., Grzywacz, Robert Kazimierz, Gross, C. J., Madurga, M., Miller, D., Stracener, Dan W., Batchelder, J. C., Brewer, Nathan T., Korgul, A., Mazzocchi, C., Mendez, A. J., Liu, Yuans, Paulauskas, S. V., Winger, J. A., Wolińska-Cichocka, M., and Zganjar, E. F. β -delayed neutron emission from Ga85. United States: N. p., 2018. Web. doi:10.1103/PhysRevC.97.054317.
Miernik, Krzysztof, Rykaczewski, Krzysztof P., Grzywacz, Robert Kazimierz, Gross, C. J., Madurga, M., Miller, D., Stracener, Dan W., Batchelder, J. C., Brewer, Nathan T., Korgul, A., Mazzocchi, C., Mendez, A. J., Liu, Yuans, Paulauskas, S. V., Winger, J. A., Wolińska-Cichocka, M., & Zganjar, E. F. β -delayed neutron emission from Ga85. United States. https://doi.org/10.1103/PhysRevC.97.054317
Miernik, Krzysztof, Rykaczewski, Krzysztof P., Grzywacz, Robert Kazimierz, Gross, C. J., Madurga, M., Miller, D., Stracener, Dan W., Batchelder, J. C., Brewer, Nathan T., Korgul, A., Mazzocchi, C., Mendez, A. J., Liu, Yuans, Paulauskas, S. V., Winger, J. A., Wolińska-Cichocka, M., and Zganjar, E. F. Tue . "β -delayed neutron emission from Ga85". United States. https://doi.org/10.1103/PhysRevC.97.054317. https://www.osti.gov/servlets/purl/1528700.
@article{osti_1528700,
title = {β -delayed neutron emission from Ga85},
author = {Miernik, Krzysztof and Rykaczewski, Krzysztof P. and Grzywacz, Robert Kazimierz and Gross, C. J. and Madurga, M. and Miller, D. and Stracener, Dan W. and Batchelder, J. C. and Brewer, Nathan T. and Korgul, A. and Mazzocchi, C. and Mendez, A. J. and Liu, Yuans and Paulauskas, S. V. and Winger, J. A. and Wolińska-Cichocka, M. and Zganjar, E. F.},
abstractNote = {Here, decay of 85Ga was studied by means of β-neutron-γ spectroscopy. A pure beam of 85Ga was produced at the Holifield Radioactive Ion Beam Facility using a resonance ionization laser ion source and a high-resolution electromagnetic separator. The β-delayed neutron emission probability was measured for the first time, yielding 70(5)%. An upper limit of 0.1% for β-delayed two-neutron emission was also experimentally established for the first time. A detailed decay scheme including absolute γ-ray intensities was obtained. Lastly, results are compared with theoretical β-delayed emission models.},
doi = {10.1103/PhysRevC.97.054317},
journal = {Physical Review C},
number = 5,
volume = 97,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2018},
month = {Tue May 15 00:00:00 EDT 2018}
}

Journal Article:

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Cited by: 6 works
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Figures / Tables:

FIG. 1 FIG. 1: a) β-gated γ-ray, and b) β-n-gated γ-ray spectra obtained in the experiment. Transitions marked by circles are assigned to the decay of 85Ga (closed for β decays, and open for βn). Other transitions are marked by parent decay: squares (85Ge), triangles (84Ge), pentagons (84As), crosses for background γ-rays,more » and question marks for unassigned transitions.« less

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Works referenced in this record:

The essential decay of pandemonium: β-delayed neutrons
journal, July 1978


The NUBASE2016 evaluation of nuclear properties
journal, March 2017


Large β -Delayed One and Two Neutron Emission Rates in the Decay of Ga 86
journal, September 2013


Beta-delayed fission and neutron emission: Consequences for the astrophysicalr-process and the age of the galaxy
journal, December 1983

  • Thielemann, F. -K.; Metzinger, J.; Klapdor, H. V.
  • Zeitschrift f�r Physik A Atoms and Nuclei, Vol. 309, Issue 4
  • DOI: 10.1007/BF01413833

Isotopic r-process abundances and nuclear structure far from stability - Implications for the r-process mechanism
journal, January 1993

  • Kratz, Karl-Ludwig; Bitouzet, Jean-Philippe; Thielemann, Friedrich-Karl
  • The Astrophysical Journal, Vol. 403
  • DOI: 10.1086/172196

The impact of individual nuclear properties on r -process nucleosynthesis
journal, January 2016

  • Mumpower, M. R.; Surman, R.; McLaughlin, G. C.
  • Progress in Particle and Nuclear Physics, Vol. 86
  • DOI: 10.1016/j.ppnp.2015.09.001

ISOL science at the Holifield Radioactive Ion Beam Facility
journal, January 2011

  • Beene, J. R.; Bardayan, D. W.; Galindo Uribarri, A.
  • Journal of Physics G: Nuclear and Particle Physics, Vol. 38, Issue 2
  • DOI: 10.1088/0954-3899/38/2/024002

On-line commissioning of the HRIBF resonant ionization laser ion source
journal, March 2013

  • Liu, Y.; Jost, C. U.; Mendez II, A. J.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 298
  • DOI: 10.1016/j.nimb.2012.12.041

New subshell closure at N = 58 emerging in neutron-rich nuclei beyond Ni 78
journal, April 2010


New half-life measurements of the most neutron-rich arsenic and germanium isotopes
journal, March 2013


Experimental study of the β - γ and β - n γ decay of the neutron-rich nucleus 85 Ga
journal, October 2013


Neutron-rich isotopes around the r-process ?waiting-point? nuclei 29 79 Cu50 and 30 80 Zn50
journal, December 1991

  • Kratz, K. -L.; Gabelmann, H.; M�ller, P.
  • Zeitschrift f�r Physik A Hadrons and Nuclei, Vol. 340, Issue 4
  • DOI: 10.1007/BF01290331

New Beta-delayed Neutron Measurements in the Light-mass Fission Group
journal, June 2014


Evidence for Gamow-Teller Decay of Ni 78 Core from Beta-Delayed Neutron Emission Studies
journal, August 2016


New calculations of gross β -decay properties for astrophysical applications: Speeding-up the classical r process
journal, May 2003


Phenomenological model of β -delayed neutron-emission probability
journal, October 2013


Systematics of neutron emission probabilities from delayed neutron precursors
journal, October 1973

  • Kratz, K. -L.; Herrmann, G.
  • Zeitschrift f�r Physik, Vol. 263, Issue 5
  • DOI: 10.1007/BF01391992

Improving systematic predictions of β -delayed neutron emission probabilities
journal, October 2012


β -delayed multiple-neutron emission in the effective density model
journal, November 2014


Unexpected high-energy γ emission from decaying exotic nuclei
journal, September 2017


Gamma Decay of Unbound Neutron-Hole States in Sn 133
journal, May 2017


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