Collisional properties of sympathetically cooled K-39

Year: 2007

Authors: De Sarlo L., Maioli P., Barontini G., Catani J., Minardi F., Inguscio M.

Autors Affiliation: LENS—European Laboratory for Non-Linear Spectroscopy and Dipartimento di Fisica, Università di Firenze,via N. Carrara 1, I-50019 Sesto Fiorentino, Firenze, Italy;
INFN, via G. Sansone 1, I-50019 Sesto Fiorentino, Firenze, Italy;
CNR-INFM, via G. Sansone 1, I-50019 Sesto Fiorentino, Firenze, Italy

Abstract: We report experimental evidence of the sympathetic cooling of K-39 with Rb-87 down to 1 mu K, obtained in a tight-confining magnetic trap. This allowed us to perform a direct measurement of the elastic cross section of K-39 below 50 mu K. The result obtained for the triplet scattering length, a(T)=-51(7) Bohr radii, agrees with previous results derived from photoassociation spectra and from Feshbach spectroscopy of K-40.


Volume: 75 (2)      Pages from: 022715-1  to: 022715-7

KeyWords: Cooling; Isotopes; Rubidium; Scattering; Spectroscopic analysis, Collisional properties; Elastic cross section; Sympathetic cooling; Tight-confining magnetic trap, Potassium
DOI: 10.1103/PhysRevA.75.022715

Citations: 19
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