Radiant energy – Electrically neutral molecular or atomic beam devices and...
Patent
1988-09-16
1989-12-12
Fields, Carolyn E.
Radiant energy
Electrically neutral molecular or atomic beam devices and...
H01J 3934
Patent
active
048869643
ABSTRACT:
The optical system includes a matter diffraction grating and an atomic beam intersecting the grating at a grazing angle of incidence. The grazing incidence angle should be less than 10.sup.-2 radians. At such shallow angles of incidence, neutral atomic beams are diffracted by conventional diffraction gratings. A suitable grating has a local flatness of 10 Angstroms and has 2400 lines per millimeter. Preferred embodiments include interferometers, beam splitters and combiners, and velocity selectors.
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"Interference of Atoms in Separated Optical Fields", Chebotayev et al., J. Opt. Soc. Am. B, vol. 2, No. 11/Nov. 1985.
"Diffraction-Grating Neutron Interferometer", A. I. Ioffe et al., JETP Lett., vol. 33, No. 7, Apr. 1981.
Proposal to National Science Foundation by David E. Pritchard, Dec. 23, 1985.
Keith David W.
Pritchard David E.
Fields Carolyn E.
Massachusetts Institute of Technology
Miller John A.
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