{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T13:24:07Z","timestamp":1773840247600,"version":"3.50.1"},"reference-count":14,"publisher":"AIP Publishing","issue":"3","license":[{"start":{"date-parts":[[2022,3,5]],"date-time":"2022-03-05T00:00:00Z","timestamp":1646438400000},"content-version":"am","delay-in-days":369,"URL":"https:\/\/publishing.aip.org\/authors\/rights-and-permissions"}],"funder":[{"DOI":"10.13039\/100000015","name":"U.S. Department of Energy","doi-asserted-by":"publisher","award":["DE-AC05-00OR22725"],"award-info":[{"award-number":["DE-AC05-00OR22725"]}],"id":[{"id":"10.13039\/100000015","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2021,3,1]]},"abstract":"<jats:p>Digital holography has been proposed to fulfill a need for an imaging diagnostic capable of in situ monitoring of surface erosion caused by plasma\u2013material interaction in nuclear fusion devices. A digital holography diagnostic for 3D surface erosion measurement has been developed at Oak Ridge National Laboratory with the goal of deployment on a plasma device. A proof-of-concept in situ demonstration is planned which would involve measurement of plasma erosion on targets exposed to an electrothermal arc source. This work presents the results of an ex situ characterization of the capability and limitations of holographic imaging of targets exposed to the arc source. Targets were designed to provide a fiducial for comparison of deformed and unaffected areas. The results indicated that the average net erosion was \u223c150 nm\/plasma exposure, which is expected to be within the diagnostic\u2019s measurement capacity. Surface roughness averages determined by holographic image analysis showed good agreement with measurements taken with a profilometer. The limit of the holography diagnostic\u2019s x\u2013y spatial resolution was characterized by comparison with scanning electron microscope imaging.<\/jats:p>","DOI":"10.1063\/5.0041279","type":"journal-article","created":{"date-parts":[[2021,3,5]],"date-time":"2021-03-05T12:45:34Z","timestamp":1614948334000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":4,"title":["A digital holography <i>ex situ<\/i> measurement characterization of plasma-exposed surface erosion from an electrothermal arc source"],"prefix":"10.1063","volume":"92","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3225-5417","authenticated-orcid":false,"given":"C. 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