Positron scattering from helium
We have used our relativistic optical potential method to calculate a complete set of cross sections for positron scattering from helium over the range from 0 to 1 keV. We present elastic, positronium formation, direct ionization, total ionization and grand total cross sections and compare these to...
Gespeichert in:
| Veröffentlicht in: | Journal of physics. B, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2019-06, Vol.52 (11), p.115203 |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | 11 |
| container_start_page | 115203 |
| container_title | Journal of physics. B, Atomic, molecular, and optical physics |
| container_volume | 52 |
| creator | McEachran, R P Stauffer, A D |
| description | We have used our relativistic optical potential method to calculate a complete set of cross sections for positron scattering from helium over the range from 0 to 1 keV. We present elastic, positronium formation, direct ionization, total ionization and grand total cross sections and compare these to measurements and other calculations. Besides the previous method for calculating positronium formation by lowering the threshold for ionization to coincide with that for positronium formation in its ground state, we have also presented results where this process is represented by including the sum obtained by successively lowering the ionization threshold to coincide with those for positronium formation in the first four excited n levels. Agreement with previous work is generally good. |
| doi_str_mv | 10.1088/1361-6455/ab0b32 |
| format | Article |
| fullrecord | <record><control><sourceid>iop_cross</sourceid><recordid>TN_cdi_iop_journals_10_1088_1361_6455_ab0b32</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>jpbab0b32</sourcerecordid><originalsourceid>FETCH-LOGICAL-c311t-6007b4ea766a098d21ce3ab653ab35f33f2d95a036d5d51ad20ee81ab979d6ae3</originalsourceid><addsrcrecordid>eNp1j81LxDAQxYMoWFfv3uzJk3VnkiZtjrL4BQt60HNImkS7bJuSdA_-97ZUPCkMMzC893g_Qi4RbhHqeo1MYCFKztfagGH0iGS_r2OSgeSsKKHip-QspR0AYk0hI1evIbVjDH2eGj2OLrb9R-5j6PJPt28P3Tk58Xqf3MXPXZH3h_u3zVOxfXl83txti4YhjoUAqEzpdCWEBllbio1j2gg-LcY9Y55ayTUwYbnlqC0F52rURlbSCu3YisCS28SQUnReDbHtdPxSCGoGVDONmmnUAjhZrhdLGwa1C4fYTwWVUZwqxGk4BaYG6yfhzR_Cf3O_AdewXUU</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Positron scattering from helium</title><source>IOP Publishing Journals</source><source>Institute of Physics (IOP) Journals - HEAL-Link</source><creator>McEachran, R P ; Stauffer, A D</creator><creatorcontrib>McEachran, R P ; Stauffer, A D</creatorcontrib><description>We have used our relativistic optical potential method to calculate a complete set of cross sections for positron scattering from helium over the range from 0 to 1 keV. We present elastic, positronium formation, direct ionization, total ionization and grand total cross sections and compare these to measurements and other calculations. Besides the previous method for calculating positronium formation by lowering the threshold for ionization to coincide with that for positronium formation in its ground state, we have also presented results where this process is represented by including the sum obtained by successively lowering the ionization threshold to coincide with those for positronium formation in the first four excited n levels. Agreement with previous work is generally good.</description><identifier>ISSN: 0953-4075</identifier><identifier>EISSN: 1361-6455</identifier><identifier>DOI: 10.1088/1361-6455/ab0b32</identifier><identifier>CODEN: JPAPEH</identifier><language>eng</language><publisher>IOP Publishing</publisher><subject>complex optical potential ; helium ; positonium formation ; positron scattering</subject><ispartof>Journal of physics. B, Atomic, molecular, and optical physics, 2019-06, Vol.52 (11), p.115203</ispartof><rights>2019 IOP Publishing Ltd</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c311t-6007b4ea766a098d21ce3ab653ab35f33f2d95a036d5d51ad20ee81ab979d6ae3</citedby><cites>FETCH-LOGICAL-c311t-6007b4ea766a098d21ce3ab653ab35f33f2d95a036d5d51ad20ee81ab979d6ae3</cites><orcidid>0000-0002-7252-5004</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.1088/1361-6455/ab0b32/pdf$$EPDF$$P50$$Giop$$H</linktopdf><link.rule.ids>314,780,784,27924,27925,53846,53893</link.rule.ids></links><search><creatorcontrib>McEachran, R P</creatorcontrib><creatorcontrib>Stauffer, A D</creatorcontrib><title>Positron scattering from helium</title><title>Journal of physics. B, Atomic, molecular, and optical physics</title><addtitle>JPB</addtitle><addtitle>J. Phys. B: At. Mol. Opt. Phys</addtitle><description>We have used our relativistic optical potential method to calculate a complete set of cross sections for positron scattering from helium over the range from 0 to 1 keV. We present elastic, positronium formation, direct ionization, total ionization and grand total cross sections and compare these to measurements and other calculations. Besides the previous method for calculating positronium formation by lowering the threshold for ionization to coincide with that for positronium formation in its ground state, we have also presented results where this process is represented by including the sum obtained by successively lowering the ionization threshold to coincide with those for positronium formation in the first four excited n levels. Agreement with previous work is generally good.</description><subject>complex optical potential</subject><subject>helium</subject><subject>positonium formation</subject><subject>positron scattering</subject><issn>0953-4075</issn><issn>1361-6455</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp1j81LxDAQxYMoWFfv3uzJk3VnkiZtjrL4BQt60HNImkS7bJuSdA_-97ZUPCkMMzC893g_Qi4RbhHqeo1MYCFKztfagGH0iGS_r2OSgeSsKKHip-QspR0AYk0hI1evIbVjDH2eGj2OLrb9R-5j6PJPt28P3Tk58Xqf3MXPXZH3h_u3zVOxfXl83txti4YhjoUAqEzpdCWEBllbio1j2gg-LcY9Y55ayTUwYbnlqC0F52rURlbSCu3YisCS28SQUnReDbHtdPxSCGoGVDONmmnUAjhZrhdLGwa1C4fYTwWVUZwqxGk4BaYG6yfhzR_Cf3O_AdewXUU</recordid><startdate>20190614</startdate><enddate>20190614</enddate><creator>McEachran, R P</creator><creator>Stauffer, A D</creator><general>IOP Publishing</general><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0002-7252-5004</orcidid></search><sort><creationdate>20190614</creationdate><title>Positron scattering from helium</title><author>McEachran, R P ; Stauffer, A D</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c311t-6007b4ea766a098d21ce3ab653ab35f33f2d95a036d5d51ad20ee81ab979d6ae3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>complex optical potential</topic><topic>helium</topic><topic>positonium formation</topic><topic>positron scattering</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>McEachran, R P</creatorcontrib><creatorcontrib>Stauffer, A D</creatorcontrib><collection>CrossRef</collection><jtitle>Journal of physics. B, Atomic, molecular, and optical physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>McEachran, R P</au><au>Stauffer, A D</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Positron scattering from helium</atitle><jtitle>Journal of physics. B, Atomic, molecular, and optical physics</jtitle><stitle>JPB</stitle><addtitle>J. Phys. B: At. Mol. Opt. Phys</addtitle><date>2019-06-14</date><risdate>2019</risdate><volume>52</volume><issue>11</issue><spage>115203</spage><pages>115203-</pages><issn>0953-4075</issn><eissn>1361-6455</eissn><coden>JPAPEH</coden><abstract>We have used our relativistic optical potential method to calculate a complete set of cross sections for positron scattering from helium over the range from 0 to 1 keV. We present elastic, positronium formation, direct ionization, total ionization and grand total cross sections and compare these to measurements and other calculations. Besides the previous method for calculating positronium formation by lowering the threshold for ionization to coincide with that for positronium formation in its ground state, we have also presented results where this process is represented by including the sum obtained by successively lowering the ionization threshold to coincide with those for positronium formation in the first four excited n levels. Agreement with previous work is generally good.</abstract><pub>IOP Publishing</pub><doi>10.1088/1361-6455/ab0b32</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0002-7252-5004</orcidid></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0953-4075 |
| ispartof | Journal of physics. B, Atomic, molecular, and optical physics, 2019-06, Vol.52 (11), p.115203 |
| issn | 0953-4075 1361-6455 |
| language | eng |
| recordid | cdi_iop_journals_10_1088_1361_6455_ab0b32 |
| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | complex optical potential helium positonium formation positron scattering |
| title | Positron scattering from helium |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-26T15%3A03%3A37IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-iop_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Positron%20scattering%20from%20helium&rft.jtitle=Journal%20of%20physics.%20B,%20Atomic,%20molecular,%20and%20optical%20physics&rft.au=McEachran,%20R%20P&rft.date=2019-06-14&rft.volume=52&rft.issue=11&rft.spage=115203&rft.pages=115203-&rft.issn=0953-4075&rft.eissn=1361-6455&rft.coden=JPAPEH&rft_id=info:doi/10.1088/1361-6455/ab0b32&rft_dat=%3Ciop_cross%3Ejpbab0b32%3C/iop_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |