Plasma-assisted laser ablation of tungsten: Reduction in ablation power threshold due to bursting of holes/bubbles
Nanosecond laser ablation of tungsten (W) exposed to helium plasma is investigated using optical emission spectroscopy. Submicrometer-sized holes/bubbles are formed on the surface of W when it was exposed to the helium plasma at a sufficiently high temperature (≳1500–1600K). The emissions from a vir...
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| Veröffentlicht in: | Applied physics letters 2007-12, Vol.91 (26) |
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| container_issue | 26 |
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| container_title | Applied physics letters |
| container_volume | 91 |
| creator | Kajita, Shin Ohno, Noriyasu Takamura, Shuichi Sakaguchi, Wataru Nishijima, Dai |
| description | Nanosecond laser ablation of tungsten (W) exposed to helium plasma is investigated using optical emission spectroscopy. Submicrometer-sized holes/bubbles are formed on the surface of W when it was exposed to the helium plasma at a sufficiently high temperature (≳1500–1600K). The emissions from a virgin W (before the helium plasma irradiation) cannot be detected when the fluence is |
| doi_str_mv | 10.1063/1.2824873 |
| format | Article |
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Submicrometer-sized holes/bubbles are formed on the surface of W when it was exposed to the helium plasma at a sufficiently high temperature (≳1500–1600K). The emissions from a virgin W (before the helium plasma irradiation) cannot be detected when the fluence is <1J∕cm2; however, the threshold fluence for the detection of neutral W emission after it was exposed to the helium plasma is ∼0.2J∕cm2. 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Submicrometer-sized holes/bubbles are formed on the surface of W when it was exposed to the helium plasma at a sufficiently high temperature (≳1500–1600K). The emissions from a virgin W (before the helium plasma irradiation) cannot be detected when the fluence is <1J∕cm2; however, the threshold fluence for the detection of neutral W emission after it was exposed to the helium plasma is ∼0.2J∕cm2. The physical mechanism of laser-induced bursting of holes/bubbles is proposed for achieving a significant reduction in ablation power threshold.</description><subject>ABLATION</subject><subject>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</subject><subject>EMISSION SPECTROSCOPY</subject><subject>HELIUM</subject><subject>LASERS</subject><subject>MATERIALS SCIENCE</subject><subject>PLASMA</subject><subject>TEMPERATURE DEPENDENCE</subject><subject>TEMPERATURE RANGE 1000-4000 K</subject><subject>TUNGSTEN</subject><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNpFUE1LxDAUDKLgunrwHwQ8eehuXtM0rTdZ_IIFRfQc0vR1W-kmS5Ii_nuz7oKXN8ybecNjCLkGtgBW8iUs8iovKslPyAyYlBkHqE7JjDHGs7IWcE4uQvhKVOScz4h_G3XY6kyHMISILU0UPdXNqOPgLHUdjZPdJMne0XdsJ_O3Huy_Zee-00XsPYbejS1tJ6TR0WbyIQ52s49IewzLZmqahJfkrNNjwKsjzsnn48PH6jlbvz69rO7XmeGljFktGEDJpa64MVKyzgAaWUAuRCNknUZR8Lw2Quu2LBGrIukCO6x4zmto-ZzcHHJd-kMFM0Q0vXHWookqB5bCQSTX7cFlvAvBY6d2fthq_6OAqX2lCtSxUv4LTGppSA</recordid><startdate>20071224</startdate><enddate>20071224</enddate><creator>Kajita, Shin</creator><creator>Ohno, Noriyasu</creator><creator>Takamura, Shuichi</creator><creator>Sakaguchi, Wataru</creator><creator>Nishijima, Dai</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>20071224</creationdate><title>Plasma-assisted laser ablation of tungsten: Reduction in ablation power threshold due to bursting of holes/bubbles</title><author>Kajita, Shin ; Ohno, Noriyasu ; Takamura, Shuichi ; Sakaguchi, Wataru ; Nishijima, Dai</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c367t-95011637a83cc770fc1ec741255b5795b544329c5aad66ee841ec5efe832391d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>ABLATION</topic><topic>CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS</topic><topic>EMISSION SPECTROSCOPY</topic><topic>HELIUM</topic><topic>LASERS</topic><topic>MATERIALS SCIENCE</topic><topic>PLASMA</topic><topic>TEMPERATURE DEPENDENCE</topic><topic>TEMPERATURE RANGE 1000-4000 K</topic><topic>TUNGSTEN</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kajita, Shin</creatorcontrib><creatorcontrib>Ohno, Noriyasu</creatorcontrib><creatorcontrib>Takamura, Shuichi</creatorcontrib><creatorcontrib>Sakaguchi, Wataru</creatorcontrib><creatorcontrib>Nishijima, Dai</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Applied physics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kajita, Shin</au><au>Ohno, Noriyasu</au><au>Takamura, Shuichi</au><au>Sakaguchi, Wataru</au><au>Nishijima, Dai</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Plasma-assisted laser ablation of tungsten: Reduction in ablation power threshold due to bursting of holes/bubbles</atitle><jtitle>Applied physics letters</jtitle><date>2007-12-24</date><risdate>2007</risdate><volume>91</volume><issue>26</issue><issn>0003-6951</issn><eissn>1077-3118</eissn><abstract>Nanosecond laser ablation of tungsten (W) exposed to helium plasma is investigated using optical emission spectroscopy. Submicrometer-sized holes/bubbles are formed on the surface of W when it was exposed to the helium plasma at a sufficiently high temperature (≳1500–1600K). The emissions from a virgin W (before the helium plasma irradiation) cannot be detected when the fluence is <1J∕cm2; however, the threshold fluence for the detection of neutral W emission after it was exposed to the helium plasma is ∼0.2J∕cm2. The physical mechanism of laser-induced bursting of holes/bubbles is proposed for achieving a significant reduction in ablation power threshold.</abstract><cop>United States</cop><doi>10.1063/1.2824873</doi><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 0003-6951 |
| ispartof | Applied physics letters, 2007-12, Vol.91 (26) |
| issn | 0003-6951 1077-3118 |
| language | eng |
| recordid | cdi_osti_scitechconnect_21016315 |
| source | AIP Journals Complete; AIP Digital Archive |
| subjects | ABLATION CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS EMISSION SPECTROSCOPY HELIUM LASERS MATERIALS SCIENCE PLASMA TEMPERATURE DEPENDENCE TEMPERATURE RANGE 1000-4000 K TUNGSTEN |
| title | Plasma-assisted laser ablation of tungsten: Reduction in ablation power threshold due to bursting of holes/bubbles |
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