Skip navigation
Skip navigation

Metastable Helium: Lifetime measurements using cold atoms as a test of QED

Baldwin, Kenneth; Hodgman, Sean; Dall, Robert; Byron, Lesa; Buckman, Stephen; Truscott, Andrew

Description

Here we present the first complete measurement of the radiative decay rate to the ground state of the lowest four triplet states of helium i.e. the metastable 23S1 state and the 23P manifold. We employ laser cooling and trapping in an ultrahigh vacuum chamber to enable direct measurement of the trap loss rate for decay from the 23P 1 state to the ground state. We then use this rate to calibrate the XUV emission decay to the ground state for all the remaining transitions. The 23P1 and 23P2...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Book chapter
URI: http://hdl.handle.net/1885/53064

Download

File Description SizeFormat Image
01_Baldwin_Metastable_Helium:_Lifetime_2010.pdf1.92 MBAdobe PDF    Request a copy


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  20 July 2017/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator