Effects of neutron radiation on the thermal conductivity of highly oriented pyrolytic graphite

被引：1

作者：

Guazzelli, M. A. ^{[1
]}

Avanzi, L. H. ^{[1
]}

Aguiar, V. A. P. ^{[2
]}

Vilas-Boas, A. C. ^{[1
]}

Alberton, S. G. ^{[2
]}

Masunaga, S. H. ^{[1
]}

Chinaglia, E. F. ^{[1
]}

Araki, K. ^{[3
]}

Nakamura, M. ^{[3
]}

Toyama, M. M. ^{[3
]}

Ferreira, F. F. ^{[4
]}

Escote, M. T. ^{[4
]}

Santos, R. B. B. ^{[1
]}

Medina, N. H. ^{[2
]}

Oliveira, J. R. B. ^{[2
]}

Cappuzzello, F. ^{[5
,6
]}

Cavallaro, M. ^{[6
]}

机构：

[1] Ctr Univ FEI, Sao Bernardo Do Campo, SP, Brazil

[2] Univ Sao Paulo, Inst Fis, Sao Paulo, Brazil

[3] Univ Sao Paulo, Inst Quim, Sao Paulo, SP, Brazil

[4] Univ Fed Abc, Santo Andre, SP, Brazil

[5] Univ Catania, Dipartimento Fis & Astron Ettore Majorana, Catania, Italy

[6] Ist Nazl Fis Nucleare Lab Nazl Sud, Catania, Italy

来源：

基金：

巴西圣保罗研究基金会;

关键词：

Neutron irradiation; HOPG; Radiation damage; Thermal conductivity; NUMEN project; ION-IRRADIATION; GRAPHENE;

D O I：

10.1016/j.diamond.2024.111803

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Highly Ordered Pyrolytic Graphite (HOPG) has been extensively researched due to its chemical and physical properties that make it suitable for applications in several technologies. Its high thermal conductivity makes HOPG an excellent heat sink, a crucial characteristic for manufacturing targets used in nuclear reactions, such as those proposed by the NUMEN project. However, when subjected to different radiation sources, this material undergoes changes in its crystalline structure, which alters its intended functionality. This study examined HOPG sheets before and after exposure to a 14 MeV neutron beam. Morphological and crystallographic analyses reveal that even minor disruptions in the high atomic ordering result in modifications to its thermal properties. The results of this study are essential to establish the survival time of the HOPG used as thermal interface material to improve heat dissipation of a nuclear target to be bombarded by an intense high-energy heavy-ion beam.

引用

页数：10