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Title: First observation of 15 Be

Abstract

The neutron-unbound nucleus 15Be was observed for the first time. It was populated using neutron transfer from a deuterated polyethylene target with a 59 MeV/u 14Be beam. Neutrons were measured in coincidence with outgoing 14Be particles and the reconstructed decay energy spectrum exhibits a resonance at 1.8(1) MeV. This corresponds to 15Be being unbound by 0.45 MeV more then 16Be thus significantly hindering the sequential two-neutron decay of 16Be to 14Be through this state.

Authors:
 [1];  [1];  [1];  [2];  [3];  [1];  [4];  [1];  [1];  [1];  [1];  [1];  [5];  [1]
  1. Michigan State Univ., East Lansing, MI (United States)
  2. Ohio Wesleyan Univ., Delaware, OH (United States)
  3. Hope College, Holland, MI (United States)
  4. Concordia College, Moorhead, MN (United States)
  5. Gettysburg College, Gettysburg, PA (United States)
Publication Date:
Research Org.:
Nuclear Science and Security Consortium, Berkeley, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1454850
Grant/Contract Number:  
NA0000979
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 88; Journal Issue: 3; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Snyder, J., Baumann, T., Christian, G., Haring-Kaye, R. A., DeYoung, P. A., Kohley, Z., Luther, B., Mosby, M., Mosby, S., Simon, A., Smith, J. K., Spyrou, A., Stephenson, S., and Thoennessen, M. First observation of 15 Be. United States: N. p., 2013. Web. doi:10.1103/PhysRevC.88.031303.
Snyder, J., Baumann, T., Christian, G., Haring-Kaye, R. A., DeYoung, P. A., Kohley, Z., Luther, B., Mosby, M., Mosby, S., Simon, A., Smith, J. K., Spyrou, A., Stephenson, S., & Thoennessen, M. First observation of 15 Be. United States. doi:10.1103/PhysRevC.88.031303.
Snyder, J., Baumann, T., Christian, G., Haring-Kaye, R. A., DeYoung, P. A., Kohley, Z., Luther, B., Mosby, M., Mosby, S., Simon, A., Smith, J. K., Spyrou, A., Stephenson, S., and Thoennessen, M. Fri . "First observation of 15 Be". United States. doi:10.1103/PhysRevC.88.031303. https://www.osti.gov/servlets/purl/1454850.
@article{osti_1454850,
title = {First observation of 15 Be},
author = {Snyder, J. and Baumann, T. and Christian, G. and Haring-Kaye, R. A. and DeYoung, P. A. and Kohley, Z. and Luther, B. and Mosby, M. and Mosby, S. and Simon, A. and Smith, J. K. and Spyrou, A. and Stephenson, S. and Thoennessen, M.},
abstractNote = {The neutron-unbound nucleus 15Be was observed for the first time. It was populated using neutron transfer from a deuterated polyethylene target with a 59 MeV/u 14Be beam. Neutrons were measured in coincidence with outgoing 14Be particles and the reconstructed decay energy spectrum exhibits a resonance at 1.8(1) MeV. This corresponds to 15Be being unbound by 0.45 MeV more then 16Be thus significantly hindering the sequential two-neutron decay of 16Be to 14Be through this state.},
doi = {10.1103/PhysRevC.88.031303},
journal = {Physical Review. C, Nuclear Physics},
number = 3,
volume = 88,
place = {United States},
year = {2013},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 15 works
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Figures / Tables:

FIG. 1 FIG. 1: Element, isotope, and 14Be reaction product identification: (a) Energy-loss (DE) versus time-of-flight of the fragments. The different elements are cleanly separated. (b) Isotope identification parameter xtx versus time-of-flight. The identified beryllium isotopes, along with 14Be reaction products are indicated in the figure.

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      Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.