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Experimental discrimination of ion stopping models near the Bragg peak in highly ionized matter
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(2017) Experimental discrimination of ion stopping models near the Bragg peak in highly ionized matter. Nature Communications, 8 . 15693. doi:10.1038/ncomms15693 ISSN 2041-1723.
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Official URL: https://doi.org/10.1038/ncomms15693
Abstract
The energy deposition of ions in dense plasmas is a key process in inertial confinement fusion that determines the α-particle heating expected to trigger a burn wave in the hydrogen pellet and resulting in high thermonuclear gain. However, measurements of ion stopping in plasmas are scarce and mostly restricted to high ion velocities where theory agrees with the data. Here, we report experimental data at low projectile velocities near the Bragg peak, where the stopping force reaches its maximum. This parameter range features the largest theoretical uncertainties and conclusive data are missing until today. The precision of our measurements, combined with a reliable knowledge of the plasma parameters, allows to disprove several standard models for the stopping power for beam velocities typically encountered in inertial fusion. On the other hand, our data support theories that include a detailed treatment of strong ion-electron collisions.
Item Type: | Journal Article | ||||||
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Subjects: | Q Science > QC Physics | ||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||
SWORD Depositor: | Library Publications Router | ||||||
Library of Congress Subject Headings (LCSH): | Inertial confinement fusion, Stopping power (Nuclear physics), Plasma (Ionized gases) | ||||||
Journal or Publication Title: | Nature Communications | ||||||
Publisher: | Nature Publishing Group | ||||||
ISSN: | 2041-1723 | ||||||
Official Date: | 1 June 2017 | ||||||
Dates: |
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Volume: | 8 | ||||||
Article Number: | 15693 | ||||||
DOI: | 10.1038/ncomms15693 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Reuse Statement (publisher, data, author rights): | ** From PubMed via Jisc Publications Router. ** History: ** received: 18-07-2016 ** accepted: 20-04-2017 | ||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||
Date of first compliant deposit: | 24 August 2017 | ||||||
Date of first compliant Open Access: | 24 August 2017 | ||||||
Funder: | Germany. Bundesministerium für Bildung und Forschung (BMBF), Helmholtz International Center for FAIR (HIC4FAIR), EUROfusion Consortium | ||||||
Grant number: | 633053 (EC) |
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