A trap-based positron beamline for the study of materials

We present the design of a new positron beamline for lifetime and Doppler studies of materials. The design is based on the Surko buffer gas trap system and is capable of producing sub-nanosecond pulses with a spot size at the sample of 10 mm. The present timing resolution of 800 ps allows lifetimes...

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Veröffentlicht in:	Measurement science & technology 2010-08, Vol.21 (8), p.085702-085702
Hauptverfasser:	Sullivan, J P, Roberts, J, Weed, R W, Went, M R, Newman, D S, Buckman, S J
Format:	Artikel
Sprache:	eng
Schlagworte:	Buffers Counting Design engineering Doppler Doppler effect Positrons Time measurements
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creator	Sullivan, J P Roberts, J Weed, R W Went, M R Newman, D S Buckman, S J
description	We present the design of a new positron beamline for lifetime and Doppler studies of materials. The design is based on the Surko buffer gas trap system and is capable of producing sub-nanosecond pulses with a spot size at the sample of 10 mm. The present timing resolution of 800 ps allows lifetimes as small as 500 ps to be resolved. Typically count rates are between 100 and 150 counts per second.
doi_str_mv	10.1088/0957-0233/21/8/085702
format	Article
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subjects	Buffers Counting Design engineering Doppler Doppler effect Positrons Time measurements
title	A trap-based positron beamline for the study of materials
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