Making relativistic positrons using ultraintense short pulse lasers
This paper describes a new positron source using ultraintense short pulse lasers. Although it has been theoretically studied since the 1970s, the use of lasers as a valuable new positron source was not demonstrated experimentally until recent years, when the petawatt-class short pulse lasers were de...
| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2009
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| _version_ | 1826299674475102208 |
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| author | Chen, H Wilks, S Bonlie, J Chen, SN Cone, K Elberson, L Gregori, G Meyerhofer, D Myatt, J Price, D Schneider, M Shepherd, R Stafford, D Tommasini, R Van Maren, R Beiersdorfer, P |
| author_facet | Chen, H Wilks, S Bonlie, J Chen, SN Cone, K Elberson, L Gregori, G Meyerhofer, D Myatt, J Price, D Schneider, M Shepherd, R Stafford, D Tommasini, R Van Maren, R Beiersdorfer, P |
| author_sort | Chen, H |
| collection | OXFORD |
| description | This paper describes a new positron source using ultraintense short pulse lasers. Although it has been theoretically studied since the 1970s, the use of lasers as a valuable new positron source was not demonstrated experimentally until recent years, when the petawatt-class short pulse lasers were developed. In 2008 and 2009, in a series of experiments performed at the Lawrence Livermore National Laboratory, a large number of positrons were observed after shooting a millimeter thick solid gold target. Up to 2× 1010 positrons/s ejected at the back of approximately millimeter thick gold targets were detected. The targets were illuminated with short (∼1 ps) ultraintense (∼1× 1020 W/ cm2) laser pulses. These positrons are produced predominantly by the Bethe-Heitler process and have an effective temperature of 2-4 MeV, with the distribution peaking at 4-7 MeV. The angular distribution of the positrons is anisotropic. For a wide range of applications, this new laser-based positron source with its unique characteristics may complement the existing sources based on radioactive isotopes and accelerators. © 2009 American Institute of Physics. |
| first_indexed | 2024-03-07T05:05:32Z |
| format | Journal article |
| id | oxford-uuid:d9c976ef-6a6d-4c72-91b1-6a9643b4759c |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:05:32Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:d9c976ef-6a6d-4c72-91b1-6a9643b4759c2022-03-27T08:58:27ZMaking relativistic positrons using ultraintense short pulse lasersJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:d9c976ef-6a6d-4c72-91b1-6a9643b4759cEnglishSymplectic Elements at Oxford2009Chen, HWilks, SBonlie, JChen, SNCone, KElberson, LGregori, GMeyerhofer, DMyatt, JPrice, DSchneider, MShepherd, RStafford, DTommasini, RVan Maren, RBeiersdorfer, PThis paper describes a new positron source using ultraintense short pulse lasers. Although it has been theoretically studied since the 1970s, the use of lasers as a valuable new positron source was not demonstrated experimentally until recent years, when the petawatt-class short pulse lasers were developed. In 2008 and 2009, in a series of experiments performed at the Lawrence Livermore National Laboratory, a large number of positrons were observed after shooting a millimeter thick solid gold target. Up to 2× 1010 positrons/s ejected at the back of approximately millimeter thick gold targets were detected. The targets were illuminated with short (∼1 ps) ultraintense (∼1× 1020 W/ cm2) laser pulses. These positrons are produced predominantly by the Bethe-Heitler process and have an effective temperature of 2-4 MeV, with the distribution peaking at 4-7 MeV. The angular distribution of the positrons is anisotropic. For a wide range of applications, this new laser-based positron source with its unique characteristics may complement the existing sources based on radioactive isotopes and accelerators. © 2009 American Institute of Physics. |
| spellingShingle | Chen, H Wilks, S Bonlie, J Chen, SN Cone, K Elberson, L Gregori, G Meyerhofer, D Myatt, J Price, D Schneider, M Shepherd, R Stafford, D Tommasini, R Van Maren, R Beiersdorfer, P Making relativistic positrons using ultraintense short pulse lasers |
| title | Making relativistic positrons using ultraintense short pulse lasers |
| title_full | Making relativistic positrons using ultraintense short pulse lasers |
| title_fullStr | Making relativistic positrons using ultraintense short pulse lasers |
| title_full_unstemmed | Making relativistic positrons using ultraintense short pulse lasers |
| title_short | Making relativistic positrons using ultraintense short pulse lasers |
| title_sort | making relativistic positrons using ultraintense short pulse lasers |
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