Laboratory Simulation of the Positron–Dust Interaction and its Implication for Interstellar Dark Clouds
We report the first laboratory experiment dealing with the interaction of a cosmic dust simulant with positrons emitted from a 22 Na radioisotope. Measurements of a charge of micrometer SiO 2 dust grains with an accuracy of one elementary charge e revealed +1 e steps due to positron annihilation ins...
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| Veröffentlicht in: | The Astrophysical journal 2023-01, Vol.942 (1), p.42 |
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| container_title | The Astrophysical journal |
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| creator | Wild, Jan Čížek, Jakub Nouzák, Libor Pavlů, Jiří Šafránková, Jana Němeček, Zdeněk Vaverka, Jakub Nosek, Dalibor Burian, Tomáš Wildová, Anna Broulím, Jan |
| description | We report the first laboratory experiment dealing with the interaction of a cosmic dust simulant with positrons emitted from a
22
Na radioisotope. Measurements of a charge of micrometer SiO
2
dust grains with an accuracy of one elementary charge
e
revealed +1 e steps due to positron annihilation inside the grain. The observed average rate of these charging events agrees well with prediction of a model based on the continuous slowing down approximation of energetic of positrons inside the grain. Less frequent charge steps larger than +1 e were attributed to emission of secondary electrons during positron slowing down. The determined coefficient of secondary electron emission is approximately inversely proportional to the grain radius. The experimental results led us to the formulation of a possible scenario of interstellar dark clouds charging. |
| doi_str_mv | 10.3847/1538-4357/aca01c |
| format | Article |
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22
Na radioisotope. Measurements of a charge of micrometer SiO
2
dust grains with an accuracy of one elementary charge
e
revealed +1 e steps due to positron annihilation inside the grain. The observed average rate of these charging events agrees well with prediction of a model based on the continuous slowing down approximation of energetic of positrons inside the grain. Less frequent charge steps larger than +1 e were attributed to emission of secondary electrons during positron slowing down. The determined coefficient of secondary electron emission is approximately inversely proportional to the grain radius. The experimental results led us to the formulation of a possible scenario of interstellar dark clouds charging.</description><identifier>ISSN: 0004-637X</identifier><identifier>EISSN: 1538-4357</identifier><identifier>DOI: 10.3847/1538-4357/aca01c</identifier><language>eng</language><publisher>Philadelphia: The American Astronomical Society</publisher><subject>Astrophysics ; Charging ; Cosmic dust ; Dust ; Electron emission ; Electrons ; Interdisciplinary astronomy ; Interstellar ; Interstellar dust ; Laboratory astrophysics ; Nuclear physics ; Positron annihilation ; Positrons ; Radioisotopes ; Silicon dioxide ; Sodium 22</subject><ispartof>The Astrophysical journal, 2023-01, Vol.942 (1), p.42</ispartof><rights>2023. The Author(s). Published by the American Astronomical Society.</rights><rights>2023. The Author(s). Published by the American Astronomical Society. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c398t-e64262cedaf0845a880a03a8bd67e0167aa956652ecb81704ca0ed78dde829cd3</cites><orcidid>0000-0003-3295-6501 ; 0000-0002-0485-210X ; 0000-0002-8160-3051 ; 0000-0003-3982-9978 ; 0000-0003-4178-5206 ; 0000-0001-6219-200X ; 0000-0003-2177-0955 ; 0000-0003-2216-2898 ; 0000-0001-8739-4273 ; 0000-0003-4631-9933 ; 0000-0001-9961-8545</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.3847/1538-4357/aca01c/pdf$$EPDF$$P50$$Giop$$Hfree_for_read</linktopdf><link.rule.ids>314,776,780,860,2096,27901,27902,38867,53842</link.rule.ids></links><search><creatorcontrib>Wild, Jan</creatorcontrib><creatorcontrib>Čížek, Jakub</creatorcontrib><creatorcontrib>Nouzák, Libor</creatorcontrib><creatorcontrib>Pavlů, Jiří</creatorcontrib><creatorcontrib>Šafránková, Jana</creatorcontrib><creatorcontrib>Němeček, Zdeněk</creatorcontrib><creatorcontrib>Vaverka, Jakub</creatorcontrib><creatorcontrib>Nosek, Dalibor</creatorcontrib><creatorcontrib>Burian, Tomáš</creatorcontrib><creatorcontrib>Wildová, Anna</creatorcontrib><creatorcontrib>Broulím, Jan</creatorcontrib><title>Laboratory Simulation of the Positron–Dust Interaction and its Implication for Interstellar Dark Clouds</title><title>The Astrophysical journal</title><addtitle>APJ</addtitle><addtitle>Astrophys. J</addtitle><description>We report the first laboratory experiment dealing with the interaction of a cosmic dust simulant with positrons emitted from a
22
Na radioisotope. Measurements of a charge of micrometer SiO
2
dust grains with an accuracy of one elementary charge
e
revealed +1 e steps due to positron annihilation inside the grain. The observed average rate of these charging events agrees well with prediction of a model based on the continuous slowing down approximation of energetic of positrons inside the grain. Less frequent charge steps larger than +1 e were attributed to emission of secondary electrons during positron slowing down. The determined coefficient of secondary electron emission is approximately inversely proportional to the grain radius. The experimental results led us to the formulation of a possible scenario of interstellar dark clouds charging.</description><subject>Astrophysics</subject><subject>Charging</subject><subject>Cosmic dust</subject><subject>Dust</subject><subject>Electron emission</subject><subject>Electrons</subject><subject>Interdisciplinary astronomy</subject><subject>Interstellar</subject><subject>Interstellar dust</subject><subject>Laboratory astrophysics</subject><subject>Nuclear physics</subject><subject>Positron annihilation</subject><subject>Positrons</subject><subject>Radioisotopes</subject><subject>Silicon dioxide</subject><subject>Sodium 22</subject><issn>0004-637X</issn><issn>1538-4357</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>O3W</sourceid><sourceid>DOA</sourceid><recordid>eNp9kc2u0zAQhS0EEqWwZ2kJloTaseOfJeq9QKVKIAESO2tqO-CSxrm2s-iOd-ANeRKSBvVuEBuPPPrOGXsOQs8pec0UlxvaMFVx1sgNWCDUPkCra-shWhFCeCWY_PoYPcn5OF9rrVco7OEQE5SYzvhTOI0dlBB7HFtcvnv8MeZQUux___x1M-aCd33xCewFgd7hUDLenYYu2EXWxrQwufiug4RvIP3A2y6OLj9Fj1rosn_2t67Rl7e3n7fvq_2Hd7vtm31lmVal8oLXorbeQUsUb0ApAoSBOjghPaFCAuhGiKb29qCoJHz6rXdSOedVra1ja7RbfF2EoxlSOEE6mwjBXBoxfTOQSrCdN41ivG2oY45p7tgBqOUgGu2451wqNXm9WLyGFO9Gn4s5xjH10_NNLQUV0xaFniiyUDbFnJNvr1MpMXM4Zk7CzEmYJZxJ8mqRhDjce_4Hf_kPHIaj0bw21EzH4Fr2B-I6nwM</recordid><startdate>20230101</startdate><enddate>20230101</enddate><creator>Wild, Jan</creator><creator>Čížek, Jakub</creator><creator>Nouzák, Libor</creator><creator>Pavlů, Jiří</creator><creator>Šafránková, Jana</creator><creator>Němeček, Zdeněk</creator><creator>Vaverka, Jakub</creator><creator>Nosek, Dalibor</creator><creator>Burian, Tomáš</creator><creator>Wildová, Anna</creator><creator>Broulím, Jan</creator><general>The American Astronomical Society</general><general>IOP Publishing</general><scope>O3W</scope><scope>TSCCA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>8FD</scope><scope>H8D</scope><scope>KL.</scope><scope>L7M</scope><scope>DOA</scope><orcidid>https://orcid.org/0000-0003-3295-6501</orcidid><orcidid>https://orcid.org/0000-0002-0485-210X</orcidid><orcidid>https://orcid.org/0000-0002-8160-3051</orcidid><orcidid>https://orcid.org/0000-0003-3982-9978</orcidid><orcidid>https://orcid.org/0000-0003-4178-5206</orcidid><orcidid>https://orcid.org/0000-0001-6219-200X</orcidid><orcidid>https://orcid.org/0000-0003-2177-0955</orcidid><orcidid>https://orcid.org/0000-0003-2216-2898</orcidid><orcidid>https://orcid.org/0000-0001-8739-4273</orcidid><orcidid>https://orcid.org/0000-0003-4631-9933</orcidid><orcidid>https://orcid.org/0000-0001-9961-8545</orcidid></search><sort><creationdate>20230101</creationdate><title>Laboratory Simulation of the Positron–Dust Interaction and its Implication for Interstellar Dark Clouds</title><author>Wild, Jan ; Čížek, Jakub ; Nouzák, Libor ; Pavlů, Jiří ; Šafránková, Jana ; Němeček, Zdeněk ; Vaverka, Jakub ; Nosek, Dalibor ; Burian, Tomáš ; Wildová, Anna ; Broulím, Jan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c398t-e64262cedaf0845a880a03a8bd67e0167aa956652ecb81704ca0ed78dde829cd3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Astrophysics</topic><topic>Charging</topic><topic>Cosmic dust</topic><topic>Dust</topic><topic>Electron emission</topic><topic>Electrons</topic><topic>Interdisciplinary astronomy</topic><topic>Interstellar</topic><topic>Interstellar dust</topic><topic>Laboratory astrophysics</topic><topic>Nuclear physics</topic><topic>Positron annihilation</topic><topic>Positrons</topic><topic>Radioisotopes</topic><topic>Silicon dioxide</topic><topic>Sodium 22</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wild, Jan</creatorcontrib><creatorcontrib>Čížek, Jakub</creatorcontrib><creatorcontrib>Nouzák, Libor</creatorcontrib><creatorcontrib>Pavlů, Jiří</creatorcontrib><creatorcontrib>Šafránková, Jana</creatorcontrib><creatorcontrib>Němeček, Zdeněk</creatorcontrib><creatorcontrib>Vaverka, Jakub</creatorcontrib><creatorcontrib>Nosek, Dalibor</creatorcontrib><creatorcontrib>Burian, Tomáš</creatorcontrib><creatorcontrib>Wildová, Anna</creatorcontrib><creatorcontrib>Broulím, Jan</creatorcontrib><collection>Institute of Physics Open Access Journal Titles</collection><collection>IOPscience (Open Access)</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>The Astrophysical journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wild, Jan</au><au>Čížek, Jakub</au><au>Nouzák, Libor</au><au>Pavlů, Jiří</au><au>Šafránková, Jana</au><au>Němeček, Zdeněk</au><au>Vaverka, Jakub</au><au>Nosek, Dalibor</au><au>Burian, Tomáš</au><au>Wildová, Anna</au><au>Broulím, Jan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Laboratory Simulation of the Positron–Dust Interaction and its Implication for Interstellar Dark Clouds</atitle><jtitle>The Astrophysical journal</jtitle><stitle>APJ</stitle><addtitle>Astrophys. 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Na radioisotope. Measurements of a charge of micrometer SiO
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dust grains with an accuracy of one elementary charge
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| subjects | Astrophysics Charging Cosmic dust Dust Electron emission Electrons Interdisciplinary astronomy Interstellar Interstellar dust Laboratory astrophysics Nuclear physics Positron annihilation Positrons Radioisotopes Silicon dioxide Sodium 22 |
| title | Laboratory Simulation of the Positron–Dust Interaction and its Implication for Interstellar Dark Clouds |
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