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15 Aug 1972

Volume 21, Issue 4, pp. 121-180

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Catastrophic disruption of the flow of a magnetically confined intense relativistic electron beam

M. Friedman and D.A. Hammer

Appl. Phys. Lett. 21, 174 (1972); http://dx.doi.org/10.1063/1.1654332 (4 pages) | Cited 9 times

Online Publication Date: 16 October 2003

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A disruption in the flow of an intense annular relativistic electron beam occurred when a sudden change in the radius of the drift tube walls was introduced. Experimental results showed that the electron beam (which was immersed in a homogeneous magnetic field) was under the influence of a strong nonadiabatic force which caused considerable changes in beam characteristics, such as spatial distribution and electron transverse energy.

Discovery of anomalous base regions in transistors

J.F. Ziegler, G.W. Cole, and J.E.E. Baglin

Appl. Phys. Lett. 21, 177 (1972); http://dx.doi.org/10.1063/1.1654333 (3 pages) | Cited 15 times

Online Publication Date: 16 October 2003

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The theoretical description of transistors has been impeded by the lack of knowledge of the p‐type impurity distributions. A method is described which accurately gives concentration profiles of the boron p‐type regions in transistors. The technique has been used to establish that the base regions in the fastest bipolar transistors are markedly different than usually assumed.

A‐15 structure Mo☒Re superconductor

J.R. Gavaler, M.A. Janocko, and C.K. Jones

Appl. Phys. Lett. 21, 179 (1972); http://dx.doi.org/10.1063/1.1654334 (2 pages) | Cited 10 times

Online Publication Date: 16 October 2003

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An investigation of the properties of Mo☒Re thin films has been undertaken. Superconducting transition temperatures of up to ∼15°K have been observed in films which have an approximate composition of Mo0.7Re0.3. This increase in Tc of 2–3°K over the corresponding bulk values is attributed to the formation of a metastable A‐15 phase in the sputtered films of this composition.
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