Search results for "surface physics"

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

2020

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…

Physics - Instrumentation and DetectorsionitAtomic Physics (physics.atom-ph)surface physicsFOS: Physical scienceselectrostatic acceleratorsInstrumentation and Detectors (physics.ins-det)hiukkaskiihdyttimetlasersäteilyPhysics - Atomic Physicspair productionion sourcespintailmiötPhysics::Plasma Physicslasers
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Deformative Properties of Monotropic Plastic Foams with a Pronounced Strut-Like Strukture

1996

Disertācija angļu valodā, kopsavilkums arī latviešu un vācu valodā.

:TECHNOLOGY::Engineering physics::Material physics with surface physics [Research Subject Categories]Polymer mechanicsSolid state physicsSchaumstoff VerformungenPutuplastiCietvielu mehānikaVerformungenSolid state mechanicsPolimeru mehānikaPlastic foamsPutuplasti - mehāniskās īpašībasDeformations
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