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.
Collisional properties of sympathetically cooled K39 / De Sarlo L.; Maioli P.; Barontini G.; Catani J.; Minardi F.; Inguscio M.. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - STAMPA. - 75:2(2007), pp. 022715.1-022715.7. [10.1103/PhysRevA.75.022715]
Collisional properties of sympathetically cooled K39
Minardi F.;
2007
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
