Propagation of heat in anthracene crystals at helium temperatures |
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| Authors: | V.A. Benderskii V.Kh. Brikenstein V.L. Broude A.G. Lavrushko |
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| Affiliation: | 1. Institute of Chemical Physics Chernogolovka, 142432 USSR;2. Institute of Solid State Physics Chernogolovka, 142432 USSR;3. Academy of Sciences of the USSR, Chernogolovka, 142432 USSR |
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| Abstract: | Measurement of temperature pulses with time resolution less than 5 nsec based, on the high-speed registration of the Debye-Waller factor in the fluourescence spectrum of an impurity layer deposited on a sample, has been achieved. In anthracene single crystals, the velocity of heat propagation was found to be equal to 0.7?1.0.105 cm/sec, approaching that sound; the mean free path of phonons was found to exceed 30 μm. |
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