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Title: Photoassociative spectroscopy of a halo molecule in 86Sr
Authors: Aman, J. A.
Hill, J. C.
Ding, R.
Hazzard, Kaden R. A.
Killian, T. C.
Kon, W. Y.
Keywords: Halo Molecule
Issue Date: 2018
Source: Aman, J. A., Hill, J. C., Ding, R., Hazzard, K. R. A., Killian, T. C., & Kon, W. Y. (2018). Photoassociative spectroscopy of a halo molecule in 86Sr. Physical Review A, 98(5), 053441-. doi: 10.1103/PhysRevA.98.053441
Series/Report no.: Physical Review A
Abstract: We present two-photon photoassociation to the least-bound vibrational level of the X1Σ+g electronic ground state of the 86Sr2 dimer and measure a binding energy of Eb = −83.00 (7)(20) kHz. Because of the very small binding energy, this is a halo state corresponding to the scattering resonance for two 86 Sr atoms at low temperature. The measured binding energy, combined with universal theory for a very weakly bound state on a potential that asymptotes to a van der Waals form, is used to determine an s-wave scattering length a = 810.6 (3) (9) a0, which is consistent with, but substantially more accurate than, the previously determined a = 798(12) a0 found from mass scaling and precision spectroscopy of other Sr isotopes. For the intermediate state, we use a bound level on the metastable 1S0 - 3P1 potential. Large sensitivity of the dimer binding energy to light near resonant with the bound-bound transition to the intermediate state suggests that 86Sr has great promise for manipulating atom interactions optically and probing naturally occurring Efimov states.
ISSN: 2469-9926
DOI: 10.1103/PhysRevA.98.053441
Rights: © 2018 American Physical Society. This paper was published in Physical Review A and is made available as an electronic reprint (preprint) with permission of American Physical Society. The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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