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Magnetic trapping of SH radicals

Eardley, J.S.; Warner, N.; Deng, L.; Carty, D.; Wrede, E.

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J.S. Eardley

N. Warner

L. Deng


Magnetic trapping of SH radicals, produced via the photostop technique, has been demonstrated. H2S in a skimmed, supersonic molecular beam was photodissociated at 212.8 nm to produce SH inside a 330 mK deep static magnetic trap. The molecular-beam speed was controlled by the mixing ratio of H2S in Kr to match the recoil velocity of the SH photofragments such that some SH radicals were produced with near-zero laboratory-frame velocity. The density of SH radicals in the 2Π3/2, v = 0, J = 3/2 state was followed by (2+1) REMPI over seven orders of magnitude of signal intensity. 5 ms after photodissociation, SH radicals moving faster than the capture velocity of 13 m/s had left the trap. The 1/e trap lifetime of the remaining SH radicals was 40 ± 10 ms at an estimated density of 5E4 molecules/cm3. Photostop offers a simple and direct way to accumulate absolute ground state molecules in a variety of traps.


Eardley, J., Warner, N., Deng, L., Carty, D., & Wrede, E. (2017). Magnetic trapping of SH radicals. Physical Chemistry Chemical Physics, 19(12), 8423-8427.

Journal Article Type Article
Acceptance Date Mar 2, 2017
Online Publication Date Mar 2, 2017
Publication Date Mar 28, 2017
Deposit Date Mar 16, 2017
Publicly Available Date Mar 2, 2018
Journal Physical Chemistry Chemical Physics
Print ISSN 1463-9076
Electronic ISSN 1463-9084
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 19
Issue 12
Pages 8423-8427
Keywords Cold molecules, Magnetic trapping.


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