PRECISE EXPERIMENTAL TEST OF CALCULATED 2-ELECTRON LAMB SHIFTS IN HELIUM

被引：25

作者：

SANSONETTI, CJ

GILLASPY, JD

CROMER, CL

机构：

[1] National Institute of Standards and Technology

来源：

PHYSICAL REVIEW LETTERS | 1990年 / 65卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.65.2539

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured the wave number of the He4 21S-31P transition by Doppler-free spectroscopy in a metastable helium beam. The result, 19 931.924 794(45) cm-1, represents an order-of-magnitude improvement over previous measurements and provides a sensitive test of two-electron QED effects. Our result shows an unexpectedly large deviation from theoretical prediction. We derive improved term values for a number of low-lying helium levels. All levels with n=2 show significant deviations from theory that are correlated with the size of calculted two-electron contributions to the Lamb shifts. © 1990 The American Physical Society.

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页码：2539 / 2542

页数：4

相关论文

共 19 条

[1] INTERFEROMETRIC FREQUENCY MEASUREMENTS OF TE-130(2) TRANSITIONS AT 486 NM [J].

BARR, JRM ;

GIRKIN, JM ;

FERGUSON, AI ;

BARWOOD, GP ;

GILL, P ;

ROWLEY, WRC ;

THOMPSON, RC .

OPTICS COMMUNICATIONS, 1985, 54 (04) :217-221

[2]

Drake G., COMMUNICATION

[3] 2-ELECTRON QED CORRECTIONS IN HELIUM-LIKE IONS [J].

DRAKE, GWF ;

MAKOWSKI, AJ .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1985, 18 (04) :L103-L106

[4] HIGH-PRECISION VARIATIONAL CALCULATIONS FOR THE 1S21S STATE OF H- AND THE 1S21S,1S2S1S AND 1S2S3S STATES OF HELIUM [J].

DRAKE, GWF .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1988, 31 (1-2) :7-13

[5] HIGH-PRECISION EIGENVALUES FOR THE 1S2P P-1 AND P-3 STATES OF HELIUM [J].

DRAKE, GWF ;

MAKOWSKI, AJ .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1988, 5 (10) :2207-2214

[6] NEW VARIATIONAL TECHNIQUES FOR THE 1SND STATES OF HELIUM [J].

DRAKE, GWF .

PHYSICAL REVIEW LETTERS, 1987, 59 (14) :1549-1552

[7] BETHE LOGARITHMS FOR HYDROGEN UP TO N=20, AND APPROXIMATIONS FOR 2-ELECTRON ATOMS [J].

DRAKE, GWF ;

SWAINSON, RA .

PHYSICAL REVIEW A, 1990, 41 (03) :1243-1246

[8] DETERMINATION OF SECONDARY-ELECTRON EJECTION COEFFICIENTS FOR RARE-GAS METASTABLE ATOMS [J].

DUNNING, FB ;

RUNDEL, RD ;

STEBBINGS, RF .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1975, 46 (06) :697-701

[9] HIGH-FLUX BEAM SOURCE OF THERMAL RARE-GAS METASTABLE ATOMS [J].

FAHEY, DW ;

PARKS, WF ;

SCHEARER, LD .

JOURNAL OF PHYSICS E-SCIENTIFIC INSTRUMENTS, 1980, 13 (04) :381-383

[10] ENERGY-LEVEL MEASUREMENTS AND LAMB SHIFT IN HELIUM [J].

GIACOBINO, E ;

BIRABEN, F .

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 1982, 15 (11) :L385-L388