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:
-
- 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:
- Journal Article: 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. doi: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. 2020.
"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},
url = {https://www.osti.gov/biblio/1603674},
journal = {Physical Review C},
issn = {2469-9985},
number = 3,
volume = 101,
place = {United States},
year = {Mon Mar 09 00:00:00 EDT 2020},
month = {Mon Mar 09 00:00:00 EDT 2020}
}
Web of Science
Works referenced in this record:
Isoscaling studies of fission: A sensitive probe into the dynamics of scission
journal, April 2004
- Veselsky, M.; Souliotis, G. A.; Jandel, M.
- Physical Review C, Vol. 69, Issue 4
Timescale for equilibration of gradients in dinuclear systems
journal, June 2013
- Brown, K.; Hudan, S.; deSouza, R. T.
- Physical Review C, Vol. 87, Issue 6
Transverse collective flow and midrapidity emission of isotopically identified light charged particles
journal, April 2011
- Kohley, Z.; May, L. W.; Wuenschel, S.
- Physical Review C, Vol. 83, Issue 4
Interplay of neutron–proton equilibration and nuclear dynamics
journal, September 2019
- McIntosh, Alan B.; Yennello, Sherry J.
- Progress in Particle and Nuclear Physics, Vol. 108
Detailed characterization of neutron-proton equilibration in dynamically deformed nuclear systems
journal, April 2017
- Rodriguez Manso, A.; McIntosh, A. B.; Jedele, A.
- Physical Review C, Vol. 95, Issue 4
Clustered and neutron-rich low density “neck” region produced in heavy-ion collisions
journal, April 1997
- Sobotka, L. G.; Dempsey, J. F.; Charity, R. J.
- Physical Review C, Vol. 55, Issue 4
Dynamical aspects of isoscaling
journal, April 2006
- Dorso, C. O.; Escudero, C. R.; Ison, M.
- Physical Review C, Vol. 73, Issue 4
Isoscaling and the nuclear EoS
journal, September 2011
- Dorso, C. A.; Molinelli, P. A. Giménez; López, J. A.
- Journal of Physics G: Nuclear and Particle Physics, Vol. 38, Issue 11
Observation of different isoscaling behavior between emitted fragments and residues
journal, June 2017
- Youngs, M.; McIntosh, A. B.; Hagel, K.
- Nuclear Physics A, Vol. 962
Characterizing Neutron-Proton Equilibration in Nuclear Reactions with Subzeptosecond Resolution
journal, February 2017
- Jedele, A.; McIntosh, A. B.; Hagel, K.
- Physical Review Letters, Vol. 118, Issue 6
Symmetry energy dependence of long-timescale isospin transport
journal, December 2014
- Stiefel, K.; Kohley, Z.; deSouza, R. T.
- Physical Review C, Vol. 90, Issue 6
Novel determination of density, temperature, and symmetry energy for nuclear multifragmentation through primary fragment-yield reconstruction
journal, February 2014
- Lin, W.; Liu, X.; Rodrigues, M. R. D.
- Physical Review C, Vol. 89, Issue 2
Isotopic yields and isoscaling in fission
journal, March 2004
- Friedman, W. A.
- Physical Review C, Vol. 69, Issue 3
Probing the density dependence of the symmetry energy via multifragmentation at subsaturation densities
journal, October 2011
- Kumar, Sanjeev; Ma, Y. G.; Zhang, G. Q.
- Physical Review C, Vol. 84, Issue 4
Tracking saddle-to-scission dynamics using in projectile breakup reactions
journal, August 2012
- Hudan, S.; McIntosh, A. B.; de Souza, R. T.
- Physical Review C, Vol. 86, Issue 2
Correlations with projectile-like fragments and emission order of light charged particles
journal, October 2012
- Kohley, Z.; Bonasera, A.; Galanopoulos, S.
- Physical Review C, Vol. 86, Issue 4
NeutronSTARS: A segmented neutron and charged particle detector for low-energy reaction studies
journal, November 2017
- Akindele, O. A.; Casperson, R. J.; Wang, B. S.
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 872
A flexible 4π neutron detector for in-beam studies: the Texas A&M neutron ball
journal, January 1995
- Schmitt, R. P.; Cooke, L.; Derrig, G.
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 354, Issue 2-3
NIMROD–ISiS, a versatile tool for studying the isotopic degree of freedom in heavy ion collisions
journal, June 2009
- Wuenschel, S.; Hagel, K.; Wada, R.
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 604, Issue 3
Reconstructed primary fragments and symmetry energy, temperature and density of the fragmenting source in at
journal, January 2015
- Liu, X.; Lin, W.; Wada, R.
- Nuclear Physics A, Vol. 933
Isoscaling in light-ion induced reactions and its statistical interpretation
journal, March 2002
- Botvina, A. S.; Lozhkin, O. V.; Trautmann, W.
- Physical Review C, Vol. 65, Issue 4
Isotopic Scaling and the Symmetry Energy in Spectator Fragmentation
journal, April 2005
- Le Fèvre, A.; Auger, G.; Begemann-Blaich, M. L.
- Physical Review Letters, Vol. 94, Issue 16
Fragment isotope distributions and the isospin dependent equation of state
journal, September 2001
- Tan, W. P.; Li, B. -A.; Donangelo, R.
- Physical Review C, Vol. 64, Issue 5
Isotopic scaling of heavy projectile residues from the collisions of with and
journal, August 2003
- Souliotis, G. A.; Shetty, D. V.; Veselsky, M.
- Physical Review C, Vol. 68, Issue 2
Isotope yields from central collisions: Dynamical emission?
journal, January 2004
- Liu, T. X.; van Goethem, M. J.; Liu, X. D.
- Physical Review C, Vol. 69, Issue 1
Isotopic Scaling in Nuclear Reactions
journal, May 2001
- Tsang, M. B.; Friedman, W. A.; Gelbke, C. K.
- Physical Review Letters, Vol. 86, Issue 22
Geometrical aspects of isoscaling
journal, February 2007
- Dávila, A.; Escudero, C. R.; López, J. A.
- Physica A: Statistical Mechanics and its Applications, Vol. 374, Issue 2
Probing the symmetry energy from the nuclear isoscaling
journal, July 2008
- Souza, S. R.; Tsang, M. B.; Donangelo, R.
- Physical Review C, Vol. 78, Issue 1
Isoscaling in central 124Sn+64Ni, 112Sn+58Ni collisions at 35 AMeV
journal, February 2004
- Geraci, E.; Bruno, M.; D'Agostino, M.
- Nuclear Physics A, Vol. 732
Isospin fractionation and isoscaling in dynamical simulations of nuclear collisions
journal, November 2003
- Ono, Akira; Danielewicz, P.; Friedman, W. A.
- Physical Review C, Vol. 68, Issue 5
Isospin Fractionation in Nuclear Multifragmentation
journal, July 2000
- Xu, H. S.; Tsang, M. B.; Liu, T. X.
- Physical Review Letters, Vol. 85, Issue 4
Timescale for isospin equilibration in projectile breakup
journal, February 2014
- Hudan, S.; deSouza, R. T.
- The European Physical Journal A, Vol. 50, Issue 2
Density dependence of the symmetry energy and the nuclear equation of state: A dynamical and statistical model perspective
journal, August 2007
- Shetty, D. V.; Yennello, S. J.; Souliotis, G. A.
- Physical Review C, Vol. 76, Issue 2