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Updated: Apr 13, 2026

Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
Published on: May 3, 2019
Note: Determining the detection efficiency of excited neutral atoms by a microchannel plate detector
Ben Berry1, M Zohrabi1, D Hayes1
1J.R. Macdonald Laboratory, Physics Department, Kansas State University, Manhattan, Kansas 66506, USA.
Abstract:
We present a method for determining the detection efficiency of neutral atoms relative to keV ions. Excited D* atoms are produced by D2 fragmentation in a strong laser field. The fragments are detected by a micro-channel plate detector either directly as neutrals or as keV ions following field ionization and acceleration by a static electric field. Moreover, we propose a new mechanism by which neutrals are detected. We show that the ratio of the yield of neutrals and ions can be related to the relative detection efficiency of these species.
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