{"product_id":"the-use-of-laser-induced-fluorescence-national-aeronautics-and-space-administr-9781288915309","title":"The Use of Laser-Induced Fluorescence to Characterize Discharge Cathode Erosion in a 30 cm Ring-Cusp Ion Thruster","description":"Relative erosion rates and impingement ion production mechanisms have been identified for the discharge cathode of a 30 cm ion engine using laser-induced fluorescence (LIF). Mo and W erosion products as well as neutral and singly ionized xenon were interrogated. The erosion increased with both discharge current and voltage and spatially resolved measurements agreed with observed erosion patters. Ion velocity mapping identified back-flowing ions near the regions of erosion with energies potentially sufficient to generate the level of observed erosion. Ion production regions downstream of the cathode were indicated and were suggested as possible sources of the erosion causing ions.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e National Aeronautics and Space Administr,James S. Sovey,George J. Williams\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 1288915306\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9781288915309\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Biblioscholar\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 03\/13\/2013\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 174\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.71lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 9.69h x 7.44w x 0.37d","brand":"National Aeronautics and Space Administr","offers":[{"title":"Paperback","offer_id":47611397341439,"sku":"9781288915309","price":57.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_c911f9c7-6511-4f52-98ce-993adab4486f.jpg?v=1764513619","url":"https:\/\/www.whiterainbookhouse.com\/products\/the-use-of-laser-induced-fluorescence-national-aeronautics-and-space-administr-9781288915309","provider":"WR Book House","version":"1.0","type":"link"}