Three-Nucleon Charge Radius: A Precise Laser Determination Using 3He

D. Shiner, R. Dixson, and V. Vedantham
Phys. Rev. Lett. 74, 3553 – Published 1 May 1995
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Abstract

The isotope shift of the 23S123P0 transition in helium has been measured using laser excitation of an atomic beam, yielding 33 668.074(5) MHz. This value, combined with atomic theory and the 4He nuclear charge radius, gives a 3He radius of 1.9506(14) fm. This result is over an order of magnitude more precise than previous determinations. It agrees with two recent theoretical values 1.958(6) and 1.954(7) fm from realistic nucleon-nucleon potentials and the 3He binding energy. Our result provides both a confirmation and a sensitive test of the nuclear theory of few-nucleon systems.

  • Received 26 July 1994

DOI:https://doi.org/10.1103/PhysRevLett.74.3553

©1995 American Physical Society

Authors & Affiliations

D. Shiner, R. Dixson, and V. Vedantham

  • Physics Department, Yale University, New Haven, Connecticut 06511

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Vol. 74, Iss. 18 — 1 May 1995

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