Cold collision frequency shift of the 1S-2S transition in hydrogen

被引：113

作者：

Killian, TC ^{[1
]}

Fried, DG

Willmann, L

Landhuis, D

Moss, SC

Greytak, TJ

Kleppner, D

机构：

[1] MIT, Dept Phys, Cambridge, MA 02139 USA

[2] MIT, Ctr Mat Sci & Engn, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.81.3807

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have observed the cold collision frequency shift of the 1S-2S transition in trapped spin-polarized atomic hydrogen. We find Delta v(1s-2s) = -3.8 +/- 0.8 x 10(-10)n Hz cm(3), where n is the sample density. From this we derive the 1S-2S s-wave triplet scattering length, a(1s-2s) = -1.4 +/- 0.3 nm, which is in fair agreement with a recent calculation. The shift provides a valuable probe of the distribution of densities in a trapped sample. [S0031-9007(98)07613-3].

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页码：3807 / 3810

页数：4

相关论文

共 23 条

[11] Scattering lengths for collisions of ground state and metastable state hydrogen atoms [J].

Jamieson, MJ ;

Dalgarno, A ;

Doyle, JM .

MOLECULAR PHYSICS, 1996, 87 (04) :817-826

[12] COLLISIONS OF ULTRACOLD TRAPPED ATOMS [J].

JULIENNE, PS ;

MIES, FH .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1989, 6 (11) :2257-2269

[13]

Ketterle W, 1996, ADV ATOM MOL OPT PHY, V37, P181

[14] Predictions for laser-cooled Rb clocks [J].

Kokkelmans, SJJMF ;

Verhaar, BJ ;

Gibble, K ;

Heinzen, DJ .

PHYSICAL REVIEW A, 1997, 56 (06) :R4389-R4392

[15] EVAPORATIVE COOLING OF SPIN-POLARIZED ATOMIC-HYDROGEN [J].

MASUHARA, N ;

DOYLE, JM ;

SANDBERG, JC ;

KLEPPNER, D ;

GREYTAK, TJ ;

HESS, HF ;

KOCHANSKI, GP .

PHYSICAL REVIEW LETTERS, 1988, 61 (08) :935-938

[16] Production of two overlapping Bose-Einstein condensates by sympathetic cooling [J].

Myatt, CJ ;

Burt, EA ;

Ghrist, RW ;

Cornell, EA ;

Wieman, CE .

PHYSICAL REVIEW LETTERS, 1997, 78 (04) :586-589

[17]

PATHRIA RK, 1972, STATISTICAL MECHANIC, P300

[18] COOLING NEUTRAL ATOMS IN A MAGNETIC TRAP FOR PRECISION SPECTROSCOPY [J].

PRITCHARD, DE .

PHYSICAL REVIEW LETTERS, 1983, 51 (15) :1336-1339

[19] SPIN-EXCHANGE AND DIPOLE RELAXATION RATES IN ATOMIC-HYDROGEN - RIGOROUS AND SIMPLIFIED CALCULATIONS [J].

STOOF, HTC ;

KOELMAN, JMVA ;

VERHAAR, BJ .

PHYSICAL REVIEW B, 1988, 38 (07) :4688-4697

[20] SPIN-EXCHANGE FREQUENCY-SHIFT IN A CESIUM ATOMIC FOUNTAIN [J].

TIESINGA, E ;

VERHAAR, BJ ;

STOOF, HTC ;

VANBRAGT, D .

PHYSICAL REVIEW A, 1992, 45 (05) :R2671-R2673