Coherent effects in synchrotron radiation (SR) have been observed for the first time from 180-MeV short electron bunches of 2.5 mm using the Tohoku 300-MeV Linac. The intensity of the coherent SR was about 10 5 times as strong as that of incoherent SR in the wavelengths of 0.4-2.2 mm. This enhancement factor corresponds to the number of electrons in a bunch. The SR intensity showed a quadratic dependence on the electron beam current. The radiation was mainly polarized in the orbital plane. The possibility of induced rf in a vacuum chamber was excluded experimentally.

No abstract

The elastic and inelastic form factors for the 0', 2', and 4' states in~C were measured. The data were analyzed by treatment of the rotational excitation in the framework of the Nilsson model. %e have obtained a single intrinsic state which satisfies simultaneously the observed form factors for the intraband transitions. The deformations were extracted directly from the charge distribution of the intrinsic state.

No abstract

Gersten [Phys. Rev. Lett. 26, 1000 (1971]. In Table I, the value of m 6 should be given as 962 MeV 0 On page 1003, in the formula for P -A, h{6) should be starred, i.e., P -The formula at the bottom of page 1003 which relates the time-reversal violating amplitude t(0) to the scattering T matrix is incorrect and should be replaced byThe correct formula for t{6) was used in all calculations of experimental observables, hence our tables and graphs stand correct as published. However, the sequence of inequalities at the top of page 1004 should be replaced by