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VOLUME 44 (1986) | ISSUE 9 | PAGE 431
Experimental study of the time evolution of the decay of Bragg modes of the collective nuclear excitations in the crystal
Pis'ma Zh. Eksp. Teor. Fiz. 44, No. 9, 431-435 (10 November 1986) The time evolution of the response of the collective nuclear states in a crystal has been studied experimentally for the first time. The collective nuclear states were excited selectively by a collimated γ-гау beam in the vicinity of the Bragg angle. When the Bragg angle was set in the exact position, the characteristic response time of the nuclear excitations decreased by a factor of ~ 6 in comparison with the