Observation of 2 pi Rotations by Fresnel Diffraction of Neutrons

Klein, A.G.; Opat, G.I.

doi:10.1103/PhysRevLett.37.238

Observation of 2 pi Rotations by Fresnel Diffraction of Neutrons

A.G. Klein
(
- Melbourne U.
)
,
G.I. Opat
(
- Melbourne U.
)

Jun, 1976

11 pages

Published in:

Phys.Rev.Lett. 37 (1976) 238

DOI:

10.1103/PhysRevLett.37.238

Report number:

UM-P-76/23

View in:

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Abstract: (APS)

We report on the first observation of Fresnel diffraction of a beam of unpolarized slow neutrons by individual ferromagnetic domain boundaries. The observed occurrence of destructive interference in the experiment demonstrates that the phase of a spinor wave function changes by a factor of - 1 when the particle described by that wave function is rotated by an odd multiple of 2π radians.

References(5)

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Observability of the Sign Change of Spinors under 2pi Rotations

Yakir Aharonov
(
- Yeshiva U.
)
,
Leonard Susskind
(
- Yeshiva U.
)

- Phys.Rev. 158 (1967) 1237-1238
•
DOI:
- 10.1103/PhysRev.158.1237

- Phys.Rev.Lett. 18 1102

Observability of 2 pi Rotations. A Proposed Experiment

A.G. Klein
(
- Melbourne U.
)
,
G.I. Opat
(
- Melbourne U.
)

- Phys.Rev.D 11 (1975) 523
•
DOI:
- 10.1103/PhysRevD.11.523

- Phys.Lett.A 54 425

Observation of the Phase Shift of a Neutron Due to Precession in a Magnetic Field

S.A. Werner
(
- Missouri U.
)
,
R. Colella
(
- Purdue U.
)
,
A.W. Overhauser
(
- Purdue U.
)
,
C.F. Eagen
(
- Ford Motor Co., Dearborn
)

- Phys.Rev.Lett. 35 (1975) 1053-1055
•
DOI:
- 10.1103/PhysRevLett.35.1053