Efficient Collection of {sup 221}Fr into a Vapor Cell Magneto-optical Trap

Journal Article · Fri Aug 01 00:00:00 EDT 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.79.994· OSTI ID:548829

Lu, Z; Corwin, K L; Vogel, K R; Wieman, C E ^[1]; Dinneen, T P; Maddi, J; Gould, H ^[2]

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1. JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309-0440 (United States)
2. Lawrence Berkeley National Laboratory, University of California, Mail Stop 71-259, Berkeley, California 94720 (United States)

We have efficiently loaded a vapor cell magneto-optical trap from an orthotropic source of {sup 221}Fr with a trapping efficiency of 56(10){percent}. A novel detection scheme allowed us to measure 900 trapped atoms with a signal to noise ratio of {approximately}60 in 1sec. We have measured the energies and the hyperfine constants of the 7 {sup 2}P{sub 1/2} and 7 {sup 2}P{sub 3/2} states. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 548829
• Journal Information: Physical Review Letters, Vol. 79, Issue 6; Other Information: PBD: Aug 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
FRANCIUM 221
TRAPPING
TRAPS
VAPORS
SIGNAL-TO-NOISE RATIO
MAGNETO-OPTICAL EFFECTS
HYPERFINE STRUCTURE