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Gershenzon, E., Goltsman, G., Elantev, A., & Kagane, M. (1978). Energy-spectrum of small donors and acceptors in germanium and effect of magnetic-field on it. In Izv. Akad. Nauk SSSR, Seriya Fizicheskaya (Vol. 42, pp. 1142–1148).
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Gershenzon, E., Goltsman, G., Orlov, L., & Ptitsina, N. (1978). Population of excited-states of small admixtures in germanium. In Izv. Akad. Nauk SSSR, Seriya Fizicheskaya (Vol. 42, pp. 1154–1159). Mezhdunarodnaya Kniga 39 Dimitrova Ul., 113095 Moscow, Russia.
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Gershenzon, E. M., Gol'tsman, G. N., Dzardanov, A. L., & Kuznetsov, E. A. (1992). Superconducting UHF-limiter based on electron heating up. Sverkhprovodimost': Fizika, Khimiya, Tekhnika, 5(11), 2164–2170.
Abstract: The results of experimental investigation of fast-action 5HF-limiter are presented; the limiter is based on the utilization of electron hetaing phenomenon in thin superconducting films. The design of SHF-limiter, which is intended for operation at liquid helium temperatures and which has the form of a section of superconducting NbN microstrip line for 1-12 GHz rang, is described.
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Gershenzon, E. M., Gol'tsman, G. N., & Ptitsyna, N. G. (1977). Carrier lifetime in excited states of shallow impurities in germanium. JETP Lett., 25(12), 539–543.
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Gershenzon, Y. M., Goltsman, G. N., Yelantyev, A. I., Petrova, Y. B., Ptitsina, N. G., & Filatov, V. S. (1987). Lecture demonstrations of properties of superconductors and liquid helium. USSR Rept Phys. Math. JPRS UPM, 24(7), 51.
Abstract: New demonstrations for low temperature physics courses are described. Two transparent Dewar vacuum flasks fitting one inside the other with the external flask for nitrogen and the internal flask for helium are used. The helium temperature can be regulated in the 4.2 to 1.6 K range and the effects of reducing helium to the superfluid state at 2.17 K can be shown: boiling abruptly stops and superfluid flow appears. In order to show the electric and magnetic characteristics of superconductivity, a superconducting NbTi solenoid containing nonsuperconducting wire and germanium and superconducting Nb materials with different critical temperatures is placed in the helium refrigerant vessel. The fall of the resistance at the critical temperatures can be shown. In order to show magnetic field and superconductive current flow properties a shunt of superconductive material is connected in parallel to the coil and is enclosed in a teflon container with a heater which can vary its temperature. When it is heated and not superconductive, magnetic field effects can be demonstrated and when it is unheated and superconducting a continuous current can be demonstrated.
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