Display options
Cite
Yanez R, Loveland W, Yao L, et al. Measurement of the survival probabilities for hot fusion reactions. Phys Rev Lett. 2014;112(15):152702doi: 10.1103/PhysRevLett.112.152702.
Yanez, R., Loveland, W., Yao, L., Barrett, J. S., Zhu, S., Back, B. B., Khoo, T. L., Alcorta, M., & Albers, M. (2014). Measurement of the survival probabilities for hot fusion reactions. Physical review letters, 112(15), 152702. https://doi.org/10.1103/PhysRevLett.112.152702
Yanez, R, et al. "Measurement of the survival probabilities for hot fusion reactions." Physical review letters vol. 112,15 (2014): 152702. doi: https://doi.org/10.1103/PhysRevLett.112.152702
Yanez R, Loveland W, Yao L, Barrett JS, Zhu S, Back BB, Khoo TL, Alcorta M, Albers M. Measurement of the survival probabilities for hot fusion reactions. Phys Rev Lett. 2014 Apr 18;112(15):152702. doi: 10.1103/PhysRevLett.112.152702. Epub 2014 Apr 17. PMID: 24785034.
Copy Download .nbib Format: NLM
Share it on

Phys Rev Lett. 2014 Apr 18;112(15):152702. doi: 10.1103/PhysRevLett.112.152702. Epub 2014 Apr 17.

Measurement of the survival probabilities for hot fusion reactions.

Physical review letters

R Yanez, W Loveland, L Yao, J S Barrett, S Zhu, B B Back, T L Khoo, M Alcorta, M Albers

Affiliations

  1. Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA.
  2. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.

PMID: 24785034 DOI: 10.1103/PhysRevLett.112.152702

Abstract

We have studied the fission-neutron emission competition in highly excited (274)Hs (Z=108) (where the fission barrier is due to shell effects) formed by a hot fusion reaction. Matching cross bombardments ((26)Mg+(248)Cm and (25)Mg+(248)Cm) were used to identify the properties of first chance fission of (274)Hs. A Harding-Farley analysis of the fission neutrons emitted in the (25)Mg,26+(248)Cm was performed to identify the prescission and postscission components of the neutron multiplicities in each system. (Γn/Γt) for the first chance fission of (274)Hs (E*=63  MeV) is 0.89±0.13; i.e., ∼90% of the highly excited nuclei survive. The high value of that survival probability is due to dissipative effects during deexcitation. A proper description of the survival probabilities of excited superheavy nuclei formed in hot fusion reactions requires consideration of both dynamic and static (shell-related) effects.

Publication Types