摘要:

Experimental MOSC(V) data are obtained in the temperature range over which majority carriers are substantially frozen out (40° − 70°K). These are compared with calculated curves and other calculated curves are presented to show the effect of impurity concentration and compensation. TheC(V) curves are characterized by a secondary minimum in capacitance near the flat band bias.

ISSN:0003-6951    

DOI:10.1063/1.1652594

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

The scanning electron microscope has been used to obtain quantitative values for the fields and field gradients emerging from magnetic heads or tapes. The microscope is used to image a known reference detail adjacent to the field source and the fields are computed from the resultant pattern distortion. Gradients are obtained by measuring the resultant astigmatism of the scanning beam. Fields down to 10 Oe were measured from a tape recorded at 100 cycles/cm.

ISSN:0003-6951    

DOI:10.1063/1.1652595

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

Relaxation behavior of 17 water vapor laser lines in the range 23‐ to 79‐&mgr; wavelength, obtained with a split‐discharge laser, is presented. Two discharges are incorporated in the same laser resonator and pulsed at varying times. The laser signal produced by the first discharge then probes the decaying second discharge at subsequent time intervals. Measuring the absorption as a function of time permits one to measure relaxation rates and suggests processes going on at different times. A fall out of this work is some new gain measurements on the 27.97‐ and 118.59‐&mgr; lines.

ISSN:0003-6951    

DOI:10.1063/1.1652596

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

It is postulated that in a saturable dye absorber used for giant pulse laser switching a phase grating is formed. To prove this experimentally a frequency doubled part of the laser beam was reflected from this ``Lippman plate'' at the Bragg angle.

ISSN:0003-6951    

DOI:10.1063/1.1652597

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

Thermionic emission from molybdenum and tungsten targets irradiated with a cw CO2laser beam has been observed. The incident energy is ≃ 0.2–0.5 J per pulse at a repetition rate of 120 cps. Peak electron currents are 0.1 mA.

ISSN:0003-6951    

DOI:10.1063/1.1652598

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

Cubic response in photoelectric emission from K3Sb illuminated by a Nd‐glass laser was investigated. Comparison of energy distribution of emitted electrons under the laser irradiation and monochromatic irradiation of natural light (3000–3500 Å) showed that most of the photoelectrons excited by simultaneous absorption of three laser photons were changed in energy distribution by collision with valence electrons.

ISSN:0003-6951    

DOI:10.1063/1.1652599

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

Calculations indicate that within the Werner band of the H2molecules laser action is possible at several spectral lines between 1025–1239 Å in a high current discharge with a risetime of a few nsec. The peak power densities are in the kilowatts cm−3range per spectral line (for strong lines) with pulse half‐width of less than 1 nsec.

ISSN:0003-6951    

DOI:10.1063/1.1652600

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

Thermoluminescence of rare‐earth doped BaF2, irradiated with x rays at 77°K, is interpreted in terms of the appearance and disappearance of three paramagnetic hole centers. One of the centers is associated with an interstitial fluorine.

ISSN:0003-6951    

DOI:10.1063/1.1652601

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

A previously unreported method of generating excessp‐njunction current is shown to degrade the current gain of transistors. Experimental evidence indicates the excess current is a surface effect which is not associated with ion drift. Avalanche breakdown is shown to be neither a necessary nor sufficient cause for degradation.

ISSN:0003-6951    

DOI:10.1063/1.1652602

出版商:AIP    

年代:1968

数据来源: AIP

摘要:

In x‐ray photoelectron spectroscopy the electron current may be increased by retarding the source electrons if, at the same time, the design of the spectrometer is matched to the retarded source.

ISSN:0003-6951    

DOI:10.1063/1.1652603

出版商:AIP    

年代:1968

数据来源: AIP