High-resolution photoassociation spectroscopy of the 6Li2 A(11Σu+) state

被引：11

作者：

Gunton, Will ^{[1
]}

Semczuk, Mariusz ^{[1
]}

Dattani, Nikesh S. ^{[2
,3
]}

Madison, Kirk W. ^{[1
]}

机构：

[1] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V5Z 1M9, Canada

[2] Univ Oxford, Dept Chem, Oxford OX1 3QZ, England

[3] Kyoto Univ, Dept Chem, Kyoto 606, Japan

来源：

PHYSICAL REVIEW A | 2013年 / 88卷 / 06期

基金：

加拿大自然科学与工程研究理事会;

关键词：

BORN-OPPENHEIMER BREAKDOWN; HYPERFINE-STRUCTURE; MOLECULES; ATOMS; UNCERTAINTY; LI-7(2); SYSTEM; COLD; GAS;

D O I：

10.1103/PhysRevA.88.062510

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present spectroscopic measurements of seven vibrational levels nu = 29-35 of the A(1(1)Sigma(+)(u)) excited state of Li-2 molecules by the photoassociation of a degenerate Fermi gas of Li-6 atoms. The absolute uncertainty of our measurements is +/- 0.000 02 cm(-1) (+/- 600 kHz) and we use these new data to further refine an analytic potential for this state. This work provides high accuracy photoassociation resonance locations essential for the eventual high-resolution mapping of the X(1(1)Sigma(+)(g)) state enabling further improvements to the s-wave scattering length determination of Li and enabling the eventual creation of ultracold ground- state Li-6(2) molecules.

引用

页数：5

共 31 条

[1] PHOTOASSOCIATIVE SPECTROSCOPY OF LONG-RANGE STATES OF ULTRACOLD LI-6(2) AND LI-7(2) [J].

ABRAHAM, ERI ;

RITCHIE, NWM ;

MCALEXANDER, WI ;

HULET, RG .

JOURNAL OF CHEMICAL PHYSICS, 1995, 103 (18) :7773-7778

[2] Hyperfine structure in photoassociative spectra of Li-6(2) and Li-7(2) [J].

Abraham, ERI ;

McAlexander, WI ;

Stoof, HTC ;

Hulet, RG .

PHYSICAL REVIEW A, 1996, 53 (05) :3092-3097

[3] Isotope effects and Born-Oppenheimer breakdown in excited singlet states of the lithium dimer [J].

Adohi-Krou, A ;

Martin, F ;

Ross, AJ ;

Linton, C ;

Le Roy, RJ .

JOURNAL OF CHEMICAL PHYSICS, 2004, 121 (13) :6309-6316

[4] EXPERIMENTAL DETERMINATIONS OF HYPERFINE-STRUCTURE IN ALKALI ATOMS [J].

ARIMONDO, E ;

INGUSCIO, M ;

VIOLINO, P .

REVIEWS OF MODERN PHYSICS, 1977, 49 (01) :31-75

[5] Analytical formulas for long-range energies of the 16 Ωg,u(+/-) states of alkali dimers dissociating into M(ns)+M(np 2PJ) [J].

Aubert-Frecon, M ;

Hadinger, G ;

Magnier, S ;

Rousseau, S .

JOURNAL OF MOLECULAR SPECTROSCOPY, 1998, 188 (02) :182-189

[6] Formation of cold (T ≤ 1 K) molecules [J].

Bahns, JT ;

Gould, PL ;

Stwalley, WC .

ADVANCES IN ATOMIC MOLECULAR, AND OPTICAL PHYSICS, VOL. 42, 2000, 42 :171-224

[7] Quantum interference and light polarization effects in unresolvable atomic lines: Application to a precise measurement of the 6,7Li D2 lines [J].

Brown, Roger C. ;

Wu, Saijun ;

Porto, J. V. ;

Sansonetti, Craig J. ;

Simien, C. E. ;

Brewer, Samuel M. ;

Tan, Joseph N. ;

Gillaspy, J. D. .

PHYSICAL REVIEW A, 2013, 87 (03)

[8] A DPF data analysis yields accurate analytic potentials for Li2(a3Σu+) and Li2(13Σg+) that incorporate 3-state mixing near the 13Σg+ state asymptote [J].

Dattani, Nikesh S. ;

Le Roy, Robert J. .

JOURNAL OF MOLECULAR SPECTROSCOPY, 2011, 268 (1-2) :199-210

[9] Realization of BEC-BCS-crossover physics in a compact oven-loaded magneto-optic-trap apparatus [J].

Gunton, Will ;

Semczuk, Mariusz ;

Madison, Kirk W. .

PHYSICAL REVIEW A, 2013, 88 (02)

[10] Realization of a Resonant Fermi Gas with a Large Effective Range [J].

Hazlett, E. L. ;

Zhang, Y. ;

Stites, R. W. ;

O'Hara, K. M. .

PHYSICAL REVIEW LETTERS, 2012, 108 (04)

← 1 2 3 4 →