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11. |
The Synchronization of Auxiliary Apparatus with a Betatron |
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Review of Scientific Instruments,
Volume 18,
Issue 2,
1947,
Page 121-124
G. C. Baldwin,
G. S. Klaiber,
A. J. Hartzler,
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PDF (247KB)
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摘要:
A method is described by which the radiation from a betatron can be controlled by external apparatus; such as a cloud chamber, whether the betatron magnet is energized continuously from alternating current, or is ``pulsed'' by connecting the previously‐charged capacitor bank to the magnetizing coils. Upon receiving an initiating signal from the cloud chamber, a relay and thyratron circuit actuates pulsing of the magnet if desired, and permits injection of electrons into the betatron vacuum tube only during a single cycle after the initiating signal. A series of three thyratrons delivers to output terminals a sequence of synchronizing signals at one‐half cycle before injection, injection time, and the time of x‐ray production; this permits various functions of the auxiliary apparatus to be synchronized with the betatron. By this method, a cloud chamber can be expanded shortly before electron injection into the betatron, so as to be fully sensitive at the time radiation is produced; the tracks can be illuminated and photographed within a short, adjustable interval after their formation, thereby reducing the effects of ion diffusion, distortions from turbulence, and the number of cosmic‐ray or contamination tracks.
ISSN:0034-6748
DOI:10.1063/1.1740896
出版商:AIP
年代:1947
数据来源: AIP
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12. |
A Stable Selective Audio Amplifier |
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Review of Scientific Instruments,
Volume 18,
Issue 2,
1947,
Page 124-127
Julian M. Sturtevant,
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PDF (214KB)
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摘要:
A selective audio amplifier is described, the center frequency and band width of which are readily changed. Both frequency‐dependent and independent degeneration are used to give a high degree of stability and linearity. Direct coupling is used throughout each feedback loop, so that the circuit can be employed at very low frequencies.
ISSN:0034-6748
DOI:10.1063/1.1740897
出版商:AIP
年代:1947
数据来源: AIP
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13. |
An Electrophoresis Apparatus Using Parabolic Mirrors |
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Review of Scientific Instruments,
Volume 18,
Issue 2,
1947,
Page 128-132
Stanley M. Swingle,
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PDF (282KB)
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摘要:
An electrophoresis apparatus with several improved features is described. Principal developments are the use of mirrors in the optical system, kinematic mechanical design, and a current regulating power supply.
ISSN:0034-6748
DOI:10.1063/1.1740898
出版商:AIP
年代:1947
数据来源: AIP
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14. |
Erratum: Electronic Frequency Stabilization of Microwave Oscillators |
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Review of Scientific Instruments,
Volume 18,
Issue 2,
1947,
Page 132-132
R. V. Pound,
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PDF (33KB)
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ISSN:0034-6748
DOI:10.1063/1.1740899
出版商:AIP
年代:1947
数据来源: AIP
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15. |
The Photographic Preparation of Oscillograms |
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Review of Scientific Instruments,
Volume 18,
Issue 2,
1947,
Page 133-134
Robert Stollberg,
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ISSN:0034-6748
DOI:10.1063/1.1740901
出版商:AIP
年代:1947
数据来源: AIP
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16. |
Remote Control Betatron Target Positioner |
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Review of Scientific Instruments,
Volume 18,
Issue 2,
1947,
Page 134-135
H. F. Kaiser,
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PDF (240KB)
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ISSN:0034-6748
DOI:10.1063/1.1740902
出版商:AIP
年代:1947
数据来源: AIP
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17. |
New Materials |
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Review of Scientific Instruments,
Volume 18,
Issue 2,
1947,
Page 135-136
Forest K. Harris,
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ISSN:0034-6748
DOI:10.1063/1.1740904
出版商:AIP
年代:1947
数据来源: AIP
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18. |
New Instruments |
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Review of Scientific Instruments,
Volume 18,
Issue 2,
1947,
Page 136-141
W. A. Wildhack,
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PDF (636KB)
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ISSN:0034-6748
DOI:10.1063/1.1740905
出版商:AIP
年代:1947
数据来源: AIP
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