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Rapid, uniform, and efficient heat transfer into dense matter using energetic proton beams with finite energy spreads

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Title
Rapid, uniform, and efficient heat transfer into dense matter using energetic proton beams with finite energy spreads
Author(s)
Chiwan Song; Junho Won; Jaehyun Song; Woo Suk Bang
Publication Date
2022-06
Journal
International Communications in Heat and Mass Transfer, v.135, pp.1 - 8
Publisher
Elsevier Ltd
Abstract
© 2022 Elsevier LtdEnergetic charged particles such as laser-driven protons or ions can transfer heat into a small solid-density sample very quickly, sometimes heating it to temperatures beyond 10,000 K. Uniform and efficient heat transfer would be desirable when measuring the physical properties of the sample after heating, but heating a thick solid-density sample both uniformly and efficiently in a short time has been very challenging. Here we show that a thick (> 1 cm) solid-density aluminum sample can be heated rapidly, uniformly, and efficiently all at the same time using an energetic proton beam with a finite energy spread. We perform Monte Carlo simulations to study the relationship between the energy spread of the incident protons and the heat transferred onto the sample for rapid, uniform, and efficient heating. We find that a 100 MeV proton beam with a Gaussian energy spread of ΔE/E ~ 70% can transfer heat into a 32 mm thick solid-density aluminum sample uniformly (temperature nonuniformity <2–6%) and efficiently (> 62% heat transfer efficiency) on a sub-nanosecond time scale.
URI
https://pr.ibs.re.kr/handle/8788114/11918
DOI
10.1016/j.icheatmasstransfer.2022.106070
ISSN
0735-1933
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > 1. Journal Papers (저널논문)
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