Oscillators – Molecular or particle resonant type
Patent
1979-07-27
1981-08-11
Larkins, William D.
Oscillators
Molecular or particle resonant type
330 43, H01S 309, H01S 314
Patent
active
042836875
ABSTRACT:
Improved gain and the elimination of beam insertion and extraction compensation in free electron lasers is realized by means of a helical periodic magnet. The magnet comprises one or more layers of coaxial bifilar helical conductors each being 180.degree. displaced and conducting current in opposite directions. The end portions of the magnet are tapered by extending successive layers one or more turns to provide a field gradient that uniformly decreases to zero.
REFERENCES:
patent: 2082121 (1937-06-01), Rypinski
patent: 2515874 (1950-07-01), Hoyler et al.
patent: 2999978 (1961-09-01), Pinkley
patent: 3197680 (1965-07-01), Wingerson
patent: 3398376 (1968-08-01), Hirshfield
patent: 3822410 (1974-07-01), Madey
Elias et al., Physical Review Letters, vol. 36, No. 13, Mar. 29, 1976, pp. 717-720
Deacon et al., Physical Review Letters, vol. 38, No. 16, Apr. 18, 1977, pp. 892-894.
Elias Luis R.
Madey John M. J.
Smith Todd I.
Larkins William D.
Matthews Willard R.
Singer Donald J.
The United States of America as represented by the Secretary of
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