Author: T. Sajavaara

0000000000275921

AUTHOR

T. Sajavaara

Experimental evidence on photo-assisted O$^-$ ion production from Al$_2$O$_3$ cathode in cesium sputter negative ion source

The production of negative ions in cesium sputter ion sources is generally considered to be a pure surface process. It has been recently proposed that ion pair production could explain the higher-than-expected beam currents extracted from these ion sources, therefore opening the door for laser-assisted enhancement of the negative ion yield. We have tested this hypothesis by measuring the effect of various pulsed diode lasers on the O$^-$ beam current produced from Al$_2$O$_3$ cathode of a cesium sputter ion source. It is expected that the ion pair production of O$^-$ requires populating the 5d electronic states of neutral cesium, thus implying that the process should be provoked only with s…

research product

CCDC 809279: Experimental Crystal Structure Determination

Related Article: M.Kariniemi, J.Niinisto, T.Hatanpaa, M.Kemell, T.Sajavaara, M.Ritala, M.Leskela|2011|Chem.Mater.|23|2901|doi:10.1021/cm200402j

research product

CCDC 809280: Experimental Crystal Structure Determination

Related Article: M.Kariniemi, J.Niinisto, T.Hatanpaa, M.Kemell, T.Sajavaara, M.Ritala, M.Leskela|2011|Chem.Mater.|23|2901|doi:10.1021/cm200402j

research product

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