Record Details
Measurement of the Survival Probabilities for Hot Fusion Reactions
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | Measurement of the Survival Probabilities for Hot Fusion Reactions |
| Names |
Yanez, R.
(creator) Loveland, W. (creator) Yao, L. (creator) Barrett, J. S. (creator) Zhu, S. (creator) Back, B. B. (creator) Khoo, T. L. (creator) Alcorta, M. (creator) Albers, M. (creator) |
| Date Issued | 2014-04-17 (iso8601) |
| Note | This is the publisher’s final pdf. The published article is copyrighted by the American Physical Society and can be found at: http://journals.aps.org/prl/. |
| Abstract | We have studied the fission-neutron emission competition in highly excited ²⁷⁴Hs (Z = 108) (where the fission barrier is due to shell effects) formed by a hot fusion reaction. Matching cross bombardments (²⁶Mg + ²⁴⁸Cm and ²⁵Mg + ²⁴⁸Cm) were used to identify the properties of first chance fission of ²⁷⁴Hs. A Harding-Farley analysis of the fission neutrons emitted in the [superscript 25,26]Mg + ²⁴⁸Cm was performed to identify the prescission and postscission components of the neutron multiplicities in each system. (Γ[subscript n]/Γ[subscript t]) for the first chance fission of ²⁷⁴Hs (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. |
| Genre | Article |
| Identifier | Yanez, R., Loveland, W., Yao, L., Barrett, J. S., Zhu, S., Back, B. B., ... & Albers, M. (2014). Measurement of the Survival Probabilities for Hot Fusion Reactions. Physical Review Letters, 112(15), 152702. doi:10.1103/PhysRevLett.112.152702 |
