Hydrogen depletion from KH2PO4 under He+ ion bombardment

Som, Tapobrata ; Dhar, Sankar ; Minwalla, Shiraz N. ; Kulkarni, Vishwas N. (1997) Hydrogen depletion from KH2PO4 under He+ ion bombardment Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 122 (2). pp. 244-246. ISSN 0168-583X

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/S0168-583X(96)00777-X


In view of the ever-growing importance of ion beams in optical material processing, this letter reports room-temperature MeV He+ ion irradiation induced depletion of hydrogen from single crystalline potassium dihydrogen phosphate (KH2PO4 or KDP) which has wide applications as a nonlinear optical material in optoelectronics technology. Irradiations have been performed using 1.5 MeV He+ ions up to a maximum dose of 2.4 × 1015 ions/cm2. Simultaneously, hydrogen profiling has been done by detecting the elastically recoiled H atoms. Bare KDP crystals show a hydrogen loss of 72% at the maximum dose whereas Au coated samples show that 60 Å of Au layer acts as a barrier to considerably reduce hydrogen depletion from KDP. A possible explanation of these phenomena is suggested.

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Deposited On:29 Sep 2011 13:27
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