MeV proton acceleration at kHz repetition rate from ultra-intense laser liquid interaction
Laser acceleration of ions to ≳MeV energies has been achieved on a variety of Petawatt laser systems, raising the prospect of ion beam applications using compact ultra-intense laser technology. However, translation from proof-of-concept laser experiment into real-world application requires MeV-scale...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2018-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/aaa8d1 |
| _version_ | 1797750661079629824 |
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| author | John T Morrison Scott Feister Kyle D Frische Drake R Austin Gregory K Ngirmang Neil R Murphy Chris Orban Enam A Chowdhury W M Roquemore |
| author_facet | John T Morrison Scott Feister Kyle D Frische Drake R Austin Gregory K Ngirmang Neil R Murphy Chris Orban Enam A Chowdhury W M Roquemore |
| author_sort | John T Morrison |
| collection | DOAJ |
| description | Laser acceleration of ions to ≳MeV energies has been achieved on a variety of Petawatt laser systems, raising the prospect of ion beam applications using compact ultra-intense laser technology. However, translation from proof-of-concept laser experiment into real-world application requires MeV-scale ion energies and an appreciable repetition rate (>Hz). We demonstrate, for the first time, proton acceleration up to 2 MeV energies at a kHz repetition rate using a milli-joule-class short-pulse laser system. In these experiments, 5 mJ of ultrashort-pulse laser energy is delivered at an intensity near $5\times {10}^{18}\,{\rm{W}}\,{\mathrm{cm}}^{-2}$ onto a thin-sheet, liquid-density target. Key to this effort is a flowing liquid ethylene glycol target formed in vacuum with thicknesses down to 400 nm and full recovery at 70 μ s, suggesting its potential use at ≫kHz rate. Novel detectors and experimental methods tailored to high-repetition-rate ion acceleration by lasers were essential to this study and are described. In addition, particle-in-cell simulations of the laser–plasma interaction show good agreement with experimental observations. |
| first_indexed | 2024-03-12T16:36:04Z |
| format | Article |
| id | doaj.art-0148616414ea4f1785ae399bef6b0f26 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:36:04Z |
| publishDate | 2018-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-0148616414ea4f1785ae399bef6b0f262023-08-08T14:51:25ZengIOP PublishingNew Journal of Physics1367-26302018-01-0120202200110.1088/1367-2630/aaa8d1MeV proton acceleration at kHz repetition rate from ultra-intense laser liquid interactionJohn T Morrison0Scott Feister1Kyle D Frische2https://orcid.org/0000-0003-3228-213XDrake R Austin3Gregory K Ngirmang4Neil R Murphy5Chris Orban6Enam A Chowdhury7W M Roquemore8Innovative Scientific Solutions, Inc. , Dayton, OH 45459, United States of AmericaUniversity of Chicago , Chicago, IL 60637, United States of AmericaInnovative Scientific Solutions, Inc. , Dayton, OH 45459, United States of AmericaDepartment of Physics, The Ohio State University , Columbus, OH 43210, United States of AmericaInnovative Scientific Solutions, Inc. , Dayton, OH 45459, United States of America; Department of Physics, The Ohio State University , Columbus, OH 43210, United States of AmericaAir Force Research Laboratory Materials and Manufacturing Directorate , WPAFB, OH 45433, United States of AmericaDepartment of Physics, The Ohio State University , Columbus, OH 43210, United States of AmericaDepartment of Physics, The Ohio State University , Columbus, OH 43210, United States of America; Intense Energy Solutions , LLC., Plain City, OH 43064, United States of AmericaAir Force Research Laboratory , WPAFB, OH 45433, United States of AmericaLaser acceleration of ions to ≳MeV energies has been achieved on a variety of Petawatt laser systems, raising the prospect of ion beam applications using compact ultra-intense laser technology. However, translation from proof-of-concept laser experiment into real-world application requires MeV-scale ion energies and an appreciable repetition rate (>Hz). We demonstrate, for the first time, proton acceleration up to 2 MeV energies at a kHz repetition rate using a milli-joule-class short-pulse laser system. In these experiments, 5 mJ of ultrashort-pulse laser energy is delivered at an intensity near $5\times {10}^{18}\,{\rm{W}}\,{\mathrm{cm}}^{-2}$ onto a thin-sheet, liquid-density target. Key to this effort is a flowing liquid ethylene glycol target formed in vacuum with thicknesses down to 400 nm and full recovery at 70 μ s, suggesting its potential use at ≫kHz rate. Novel detectors and experimental methods tailored to high-repetition-rate ion acceleration by lasers were essential to this study and are described. In addition, particle-in-cell simulations of the laser–plasma interaction show good agreement with experimental observations.https://doi.org/10.1088/1367-2630/aaa8d1ion accelerationMeV proton accelerationlaser–plasma interactionultra-intense laser solid interactiontarget normal sheath accelerationparticle-in-cell |
| spellingShingle | John T Morrison Scott Feister Kyle D Frische Drake R Austin Gregory K Ngirmang Neil R Murphy Chris Orban Enam A Chowdhury W M Roquemore MeV proton acceleration at kHz repetition rate from ultra-intense laser liquid interaction New Journal of Physics ion acceleration MeV proton acceleration laser–plasma interaction ultra-intense laser solid interaction target normal sheath acceleration particle-in-cell |
| title | MeV proton acceleration at kHz repetition rate from ultra-intense laser liquid interaction |
| title_full | MeV proton acceleration at kHz repetition rate from ultra-intense laser liquid interaction |
| title_fullStr | MeV proton acceleration at kHz repetition rate from ultra-intense laser liquid interaction |
| title_full_unstemmed | MeV proton acceleration at kHz repetition rate from ultra-intense laser liquid interaction |
| title_short | MeV proton acceleration at kHz repetition rate from ultra-intense laser liquid interaction |
| title_sort | mev proton acceleration at khz repetition rate from ultra intense laser liquid interaction |
| topic | ion acceleration MeV proton acceleration laser–plasma interaction ultra-intense laser solid interaction target normal sheath acceleration particle-in-cell |
| url | https://doi.org/10.1088/1367-2630/aaa8d1 |
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