NEW MEASUREMENT OF THE PROTON GYROMAGNETIC RATIO AND A DERIVED VALUE OF THE FINE-STRUCTURE CONSTANT ACCURATE TO A PART IN 10

被引：85
作者：
WILLIAMS, ER
OLSEN, PT
机构：
[1] Electrical Measurements and Standards Division, Center for Absolute Physical Quantities, Washington
来源：
PHYSICAL REVIEW LETTERS | 1979年 / 42卷 / 24期
关键词：
D O I：
10.1103/PhysRevLett.42.1575
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A new value for the fine-structure constant has been obtained from a new measurement of the gyromagnetic ratio of the proton. The result, γp′(low)NBS=2.675 132 29(57)×108 s-1 TNBS-1 (0.21 ppm), is used to derive α-1=137.035 963(15) (0.11 ppm). This value of α-1 is (0.33±0.14) ppm less than the value of α-1 derived from measurements of the anomalous magnetic moment of the electron, ae, and its current best quantum electrodynamics theoretical estimate. © 1979 The American Physical Society.
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页码：1575 / 1579
页数：5
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