Nuclear temperature and its dependence on the source neutron-proton asymmetry deduced using the Albergo thermometer

Huang, Y.; Zheng, H.; Wada, R.; Liu, X.; Lin, W.; Qu, G.; Huang, M.; Ren, P.; Han, J.; Bonasera, A.; Hagel, K.; Rodrigues, M. R. D.; Kowalski, S.; Keutgen, T.; Barbui, M.; Natowitz, J. B.

doi:10.1103/physrevc.103.014601

Nuclear temperature and its dependence on the source neutron-proton asymmetry deduced using the Albergo thermometer

Journal Article · Tue Jan 05 00:00:00 EST 2021 · Physical Review. C

DOI:https://doi.org/10.1103/physrevc.103.014601· OSTI ID:1778021

Huang, Y. ^[1]; ^[2]; Wada, R. ^[3]; Liu, X. ^[4]; ^[4]; Qu, G. ^[4]; Huang, M. ^[5]; Ren, P. ^[4]; Han, J. ^[4]; Bonasera, A. ^[6]; Hagel, K. ^[7]; ^[8]; ^[9]; ^[10]; Barbui, M. ^[7]; ^[7]

Sichuan Univ., Chengdu (China); Cyclotron Institute, Texas A&M University, TX (United States)
Shaanxi Normal Univ., Xi'an (China)
Texas A & M Univ., College Station, TX (United States); Henan Normal Univ., Xinxiang (China)
Sichuan Univ., Chengdu (China)
Inner Mongolia Univ. for Nationalities, Tongliao (China)
Texas A & M Univ., College Station, TX (United States); INFN, Catania (Italy)
Texas A & M Univ., College Station, TX (United States)
Univ. de Sao Paulo (Brazil)
Silesia Univ., Katowice (Poland)
Univ. Catholique de Louvain (Belgium)

Albergo thermometers with double isotope, isotone and isobar yield ratio pairs with one proton or/and neutron difference are investigated. Without any extra sequential decay correction, a real temperature value of 4.9 ± 0.5 MeV is deduced from the yields of the experimentally reconstructed primary hot intermediate mass fragments (IMFs) from ⁶⁴Zn + ¹¹²Sn collisions at 40 MeV/nucleon using the Albergo thermometer for the first time. An experimental sequential decay correction from the apparent temperatures to the real ones for twelve other reaction systems with different neutron-proton (N/Z) asymmetries in the same experiment, ⁷⁰Zn, ⁶⁴Ni on ^112,124Sn, ^58,64Ni, ¹⁹⁷Au, ²³²Th at 40 MeV/nucleon, is performed using an empirical correction factor approach of Tsang et al. with the deduced 4.9 MeV temperature value. The dependence of nuclear temperature on the source N/Z asymmetry is further investigated using these deduced real source temperature values from the present thirteen systems. It is found that the deduced real source temperatures at the present source N/Z range show a rather weak dependence on the source N/Z asymmetry. In conclusion, by comparison between our previous results and those from other independent experiments, a consistent description for the N/Z asymmetry dependence of nuclear temperature is addressed.

View Accepted Manuscript (DOE)

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

Sponsoring Organization:: Fundamental Research Funds for the Central Universities; National Natural Science Foundation of China; USDOE Office of Science (SC)

Grant/Contract Number:: FG02-93ER40773

OSTI ID:: 1778021

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 1 Vol. 103; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Nuclear temperature and its dependence on the source neutron-proton asymmetry deduced using the Albergo thermometer

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