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Title: Isoscaling and nuclear reaction dynamics

Abstract

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 ≤ ZL ≤ 8 emitted from the excited projectile-like fragment in events that contained a heavy fragment with ZH ≥ 12. The breakup orientation θprox was defined as the angle between the heavy and light fragments’ center-of-mass velocity and the fragment pairs’ relative velocity. Breakups between 0° < θprox ≤ 80° have been shown to be dominated by dynamical contributions, while break-up angles of θprox > 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 θprox reveals the sensitivity of α and β to the mechanism of fragment production.

Authors:
ORCiD logo [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Texas A & M Univ., College Station, TX (United States)
Publication Date:
Research Org.:
Texas A & M Univ., College Station, TX (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1603674
Alternate Identifier(s):
OSTI ID: 1603813
Grant/Contract Number:  
FG02-93ER40773
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 101; Journal Issue: 3; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; isoscaling; low & intermediate energy heavy-ion reactions; nuclear fragmentation; nuclear matter; nuclear reactions; thermal & statistical models

Citation Formats

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, and Yennello, Sherry. Isoscaling and nuclear reaction dynamics. United States: N. p., 2020. Web. https://doi.org/10.1103/PhysRevC.101.034605.
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. Isoscaling and nuclear reaction dynamics. United States. https://doi.org/10.1103/PhysRevC.101.034605
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, and Yennello, Sherry. Mon . "Isoscaling and nuclear reaction dynamics". United States. https://doi.org/10.1103/PhysRevC.101.034605. https://www.osti.gov/servlets/purl/1603674.
@article{osti_1603674,
title = {Isoscaling and nuclear reaction dynamics},
author = {Hannaman, Andrew and McIntosh, Alan and Jedele, Andrea and Abbott, Austin and Gauthier, Jerome and Hagel, Kris and Harvey, Bryan and Kohley, Zach and Lui, Yiu-Wing and McIntosh, Lauren and Rodriguez Manso, Alis and Sorensen, Maxwell and Tobin, Zachary and Wada, Roy and Youngs, Michael and Yennello, Sherry},
abstractNote = {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 ≤ ZL ≤ 8 emitted from the excited projectile-like fragment in events that contained a heavy fragment with ZH ≥ 12. The breakup orientation θprox was defined as the angle between the heavy and light fragments’ center-of-mass velocity and the fragment pairs’ relative velocity. Breakups between 0° < θprox ≤ 80° have been shown to be dominated by dynamical contributions, while break-up angles of θprox > 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 θprox reveals the sensitivity of α and β to the mechanism of fragment production.},
doi = {10.1103/PhysRevC.101.034605},
journal = {Physical Review C},
number = 3,
volume = 101,
place = {United States},
year = {2020},
month = {3}
}

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