title: Magnetic trapping of SH radicals.
abstract: 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 the2Π3/2, 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-1had left the trap. The 1/e trap lifetime of the remaining SH radicals was 40 ± 10 ms at an estimated density of 5 × 104molecules per cm3. Photostop offers a simple and direct way to accumulate absolute ground state molecules in a variety of traps.
authors.affiliation: Department of Chemistry, Joint Quantum Centre Durham-Newcastle, Durham University, South Road, Durham, DH1 3LE, UK. eckart.wrede@durham.ac.uk.
authors.forename: J S
authors.initials: JS
authors.lastname: Eardley
authors.forename: N
authors.initials: N
authors.lastname: Warner
authors.forename: L Z
authors.initials: LZ
authors.lastname: Deng
authors.forename: D
authors.initials: D
authors.lastname: Carty
authors.forename: E
authors.initials: E
authors.lastname: Wrede