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Time-resolved Rayleigh scattering measurements of methane clusters for laser-cluster fusion experiments

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Title
Time-resolved Rayleigh scattering measurements of methane clusters for laser-cluster fusion experiments
Author(s)
Jaehyun Song; Junho Won; Woosuk Bang
Publication Date
2021-12-17
Journal
PLoS ONE, v.16, no.12, pp.1 - 10
Publisher
Public Library of Science
Abstract
We present a time-resolved analysis of Rayleigh scattering measurements to determine the average size of methane clusters and find the optimum timing for laser-cluster fusion experiments. We measure Rayleigh scattering and determine the average size of methane clusters varying the backing pressure (P0) from 11 bar to 69 bar. Regarding the onset of clustering, we estimate that the average size of methane clusters at the onset of clustering is Nc0≅20 at 11 bar. According to our measurements, the average cluster radius r follows the power law of r∝P01.86. Our ion time-of-flight measurements indicate that we have produced energetic deuterium ions with kT = 52±2 keV after laser-cluster interaction using CD4 gas at 50 bar. We find that this ion temperature agrees with the predicted temperature from CD4 clusters at 50 bar with r = 14 nm assuming the Coulomb explosion model.
URI
https://pr.ibs.re.kr/handle/8788114/11750
DOI
10.1371/journal.pone.0261574
ISSN
1932-6203
Appears in Collections:
Center for Relativistic Laser Science(초강력 레이저과학 연구단) > 1. Journal Papers (저널논문)
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