Isoscaling and nuclear reaction dynamics

Hannaman, Andrew; McIntosh, Alan; Jedele, Andrea; Abbott, Austin; Gauthier, Jerome; Hagel, Kris; Harvey, Bryan; Kohley, Zach; Lui, Yiu-Wing; McIntosh, Lauren; Rodriguez Manso, Alis; Sorensen, Maxwell; Tobin, Zachary; Wada, Roy; Youngs, Michael; Yennello, Sherry

doi:10.1103/PhysRevC.101.034605

Title: Isoscaling and nuclear reaction dynamics

Journal Article · 09 March 2020 · Physical Review C

DOI: https://doi.org/10.1103/PhysRevC.101.034605 · OSTI ID:1603674

^[1]; McIntosh, Alan ^[1]; Jedele, Andrea ^[1]; Abbott, Austin ^[1]; Gauthier, Jerome ^[1]; Hagel, Kris ^[1]; Harvey, Bryan ^[1]; Kohley, Zach ^[1]; Lui, Yiu-Wing ^[1]; McIntosh, Lauren ^[1]; Rodriguez Manso, Alis ^[1]; Sorensen, Maxwell ^[1]; Tobin, Zachary ^[1]; Wada, Roy ^[1]; Youngs, Michael ^[1]; Yennello, Sherry ^[1]

Texas A & M Univ., College Station, TX (United States)

Isoscaling parameters α and β have been explored as a function of breakup angle in binary excited projectile-like fragment decays produced in collisions of ⁷⁰Zn+ ⁷⁰Zn and ⁶⁴Zn+ ⁶⁴Zn at 35 MeV per nucleon. In this analysis, focus was placed on isoscaling the second heaviest fragment with 4 ≤ Z_L ≤ 8 emitted from the excited projectile-like fragment in events that contained a heavy fragment with Z_H ≥ 12. The breakup orientation θ_prox was defined as the angle between the heavy and light fragments’ center-of-mass velocity and the fragment pairs’ relative velocity. Breakups between 0° < θ_prox ≤ 80° have been shown to be dominated by dynamical contributions, while break-up angles of θ_prox > 100° are predominantly statistical. Historically, isoscaling has often been understood and applied in a statistical context, assuming that the fragments are produced after statistical equilibrium is achieved. Finally, studying isoscaling parameters as a function of θ_prox reveals the sensitivity of α and β to the mechanism of fragment production.

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Research Organization:: Texas A & M Univ., College Station, TX (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: FG02-93ER40773

OSTI ID:: 1603674

Alternate ID(s):: OSTI ID: 1603813

Journal Information:: Physical Review C, Vol. 101, Issue 3; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 3 works

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References (33)

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
isoscaling
low & intermediate energy heavy-ion reactions
nuclear fragmentation
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nuclear reactions
thermal & statistical models

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