Bose-Einstein condensation of {sup 88}Sr through sympathetic cooling with {sup 87}Sr

Journal Article · Sat May 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.051601· OSTI ID:21413355

Mickelson, P G; Martinez de Escobar, Y N; Yan, M; DeSalvo, B J; Killian, T C ^[1]

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1. Rice University, Department of Physics and Astronomy, Houston, Texas 77251 (United States)

We report Bose-Einstein condensation of {sup 88}Sr, which has a small, negative s-wave scattering length (a{sub 88}=-2a{sub 0}). We overcome the poor evaporative cooling characteristics of this isotope by sympathetic cooling with {sup 87}Sr atoms. {sup 87}Sr is effective in this role despite the fact that it is a fermion because of the large ground-state degeneracy arising from a nuclear spin of I=9/2, which reduces the impact of Pauli blocking of collisions. We observe a limited number of atoms in the condensate (N{sub max{approx_equal}}10{sup 4}) that is consistent with the value of a{sub 88} and the optical dipole trap parameters.

• OSTI ID: 21413355
• Journal Information: Physical Review. A, Vol. 81, Issue 5; Other Information: DOI: 10.1103/PhysRevA.81.051601; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMS
BOSE-EINSTEIN CONDENSATION
CHANNELING
COLLISIONS
DIPOLES
EVAPORATIVE COOLING
FERMIONS
GROUND STATES
S WAVES
SCATTERING LENGTHS
STRONTIUM 87
STRONTIUM 88
TRAPS
ALKALINE EARTH ISOTOPES
BETA DECAY RADIOISOTOPES
COOLING
DIMENSIONS
ELECTRON CAPTURE RADIOISOTOPES
ENERGY LEVELS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LENGTH
MULTIPOLES
NUCLEI
PARTIAL WAVES
RADIOISOTOPES
STABLE ISOTOPES
STRONTIUM ISOTOPES