Zobrazeno 1 - 10
of 216
pro vyhledávání: '"W. I. McAlexander"'
Autor:
K. E. Strecker, B. Ghaffari, W. I. McAlexander, D. M. Homan, Randall G. Hulet, Jordan M. Gerton
Publikováno v:
Physical Review A. 60:3878-3881
A slow atom source, which does not rely on lasers, has been developed and characterized. The device, acting as an atomic low-pass velocity filter, utilizes permanent magnets to passively select the slow atoms present in a thermal atomic beam. Slow at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24864f4022f28ff69804bd576bd6e9d2
https://doi.org/10.1103/physreva.60.3878
https://doi.org/10.1103/physreva.60.3878
Publikováno v:
Physical Review A. 57:R1497-R1500
We use a full coupled-channels method to calculate collisional properties of magnetically or optically trapped ultracold ${}^{6}\mathrm{Li}.$ The magnetic-field dependence of the $s$-wave scattering lengths of several mixtures of hyperfine states are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1899effddf091afbf470a0e54cb17a9
https://doi.org/10.1103/physreva.57.r1497
https://doi.org/10.1103/physreva.57.r1497
Autor:
M. Houbiers, W. I. McAlexander, H. T. C. Stoof, Randall G. Hulet, Charles Sackett, R. Ferwerda
Publikováno v:
Physical Review A. 56:4864-4878
We report on a study of the superfluid atate of spin-polarized atomic 6-Li confined in a magnetic trap. Density profiles of this degenerate Fermi gas, and the spatial distribution of the BCS order parameter are calculated in the local density approxi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6edb3e442d252f3dcca217d09f2e285
https://doi.org/10.1103/physreva.56.4864
https://doi.org/10.1103/physreva.56.4864
Autor:
Randall G. Hulet, Robin Côté, Eric Abraham, Jordan M. Gerton, W. I. McAlexander, Alexander Dalgarno
Publikováno v:
Physical Review A. 55:R3299-R3302
The triplet s-wave scattering length of {sup 6}Li is determined using two-photon photoassociative spectroscopy of the diatomic a{sup 3}{Sigma}{sub u}{sup +} state of {sup 6}Li{sub 2}. The measured binding energy of the highest-lying bound state, comb
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d215384ce7150485333d7405a71774b
https://doi.org/10.1103/physreva.55.r3299
https://doi.org/10.1103/physreva.55.r3299
Publikováno v:
Physical Review A. 54:R5-R8
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2796e82d95fe5c04b0988b4bb986f027
https://doi.org/10.1103/physreva.54.r5
https://doi.org/10.1103/physreva.54.r5
Publikováno v:
Physical Review A. 53:3092-3097
We present spectra of hyperfine resolved vibrational levels of the A1Σu+and 1 3Σg+ states of 6Li2 and 7Li2 obtained via photoassociation of colliding ultracold atoms in a magneto-optical trap. A simple first-order perturbation theory analysis accur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b44e2035e56416df18d8a60c1884c8e
https://doi.org/10.1103/physreva.53.3092
https://doi.org/10.1103/physreva.53.3092
Publikováno v:
The Journal of Chemical Physics. 103:7773-7778
We have obtained spectra of the high‐lying vibrational levels of the A1Σu+ and 13Σg+states of both 6Li2 and 7Li2 via photoassociation of colliding ultracold atoms confined to a magneto‐optical trap. Because of the low collision energies (∼1 m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::590e8f1bbe7f796c6d06f1c30593600f
https://doi.org/10.1063/1.470296
https://doi.org/10.1063/1.470296
Autor:
Randall G. Hulet, Eric Abraham, H. T. C. Stoof, Carl J. Williams, W. I. McAlexander, N. W. M. Ritchie
Publikováno v:
Physical Review A. 51:R871-R874
We have obtained spectra of the high-lying vibrational levels of the 13Σg+ state of 6Li2 via photoassociation of ultracold 6Li atoms confined in a magneto-optical trap. The 13Σg+ state of the diatomic molecule correlates to a 2S1/2 state atom plus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c91514b94468b9e8ce4ccd2e32a24c1
https://doi.org/10.1103/physreva.51.r871
https://doi.org/10.1103/physreva.51.r871
Autor:
Randall G. Hulet, Eric Abraham, Alexander Dalgarno, W. I. McAlexander, Robin Côté, Jordan M. Gerton
Publikováno v:
Physical Review A. 53:R3713-R3715
Photoassociation of ultracold lithium atoms into bound vibrational levels of the $A^{1}\ensuremath{\Sigma}_{u}^{+}$ excited state is used to probe the $X^{1}\ensuremath{\Sigma}_{g}^{+}$ ground-state interaction potential of $^{6}\mathrm{Li}_{2}$ and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd35dc91effc15df69338cb542d0f627
https://doi.org/10.1103/physreva.53.r3713
https://doi.org/10.1103/physreva.53.r3713
Publikováno v:
ResearcherID
We report the attainment of simultaneous quantum degeneracy in a mixed gas of bosons (lithium-7) and fermions (lithium-6). The Fermi gas has been cooled to a temperature of 0.25 times the Fermi temperature by thermal collisions with the evaporatively
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::348816516589fe50c296c98b3d415387
https://pubmed.ncbi.nlm.nih.gov/11283362
https://pubmed.ncbi.nlm.nih.gov/11283362