Rocket Measurements of Faraday Rotation and Differential Absorption

H. W. Knoebel; D. O. Skaperdas

doi:10.1063/1.1719990

Rocket Measurements of Faraday Rotation and Differential Absorption

Review of Scientific Instruments ◽

10.1063/1.1719990 ◽

1966 ◽

Vol 37 (10) ◽

pp. 1395-1400 ◽

Cited By ~ 9

Author(s):

H. W. Knoebel ◽

D. O. Skaperdas

Keyword(s):

Faraday Rotation ◽

Differential Absorption ◽

Rocket Measurements

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Lower ionosphere electron concentration and collision frequency from rocket measurements of Faraday rotation, differential absorption, and probe current

Journal of Geophysical Research Atmospheres ◽

10.1029/jz072i021p05239 ◽

1967 ◽

Vol 72 (21) ◽

pp. 5239-5245 ◽

Cited By ~ 76

Author(s):

E. A. Mechtly ◽

S. A. Bowhill ◽

L. G. Smith ◽

H. W. Knoebel

Keyword(s):

Faraday Rotation ◽

Electron Concentration ◽

Collision Frequency ◽

Lower Ionosphere ◽

Differential Absorption ◽

Probe Current ◽

Rocket Measurements

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D-region electron densities and collision frequencies from Faraday rotation and differential absorption measurements

Journal of Atmospheric and Terrestrial Physics ◽

10.1016/0021-9169(72)90188-2 ◽

1972 ◽

Vol 34 (8) ◽

pp. 1321-1335 ◽

Cited By ~ 35

Author(s):

F.D.G. Bennett ◽

J.E. Hall ◽

P.H.G. Dickinson

Keyword(s):

Faraday Rotation ◽

Differential Absorption ◽

Electron Densities ◽

D Region ◽

Absorption Measurements

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Deduction of Ionospheric Electron Densities and Collision Frequencies from Differential Absorption and Faraday Rotation Measurements in the Quasi-Transverse Region

IETE Journal of Research ◽

10.1080/03772063.1973.11487192 ◽

1973 ◽

Vol 19 (6) ◽

pp. 332-334

Author(s):

M. Mukunda Rao

Keyword(s):

Faraday Rotation ◽

Differential Absorption ◽

Electron Densities

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X-Ray absorption edge elemental imaging of B. thuringienis

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100153038 ◽

1989 ◽

Vol 47 ◽

pp. 212-213

Author(s):

R. L. Stears

Keyword(s):

Absorption Edge ◽

Elemental Distribution ◽

X Rays ◽

Differential Absorption ◽

Synchrotron Source ◽

High Brightness ◽

X Ray ◽

Elemental Imaging ◽

Cellular Integrity ◽

X Ray Absorption

Because of the nature of the bacterial endospore, little work has been done on analyzing their elemental distribution and composition in the intact, living, hydrated state. The majority of the qualitative analysis entailed intensive disruption and processing of the endospores, which effects their cellular integrity and composition.Absorption edge imaging permits elemental analysis of hydrated, unstained specimens at high resolution. By taking advantage of differential absorption of x-ray photons in regions of varying elemental composition, and using a high brightness, tuneable synchrotron source to obtain monochromatic x-rays, contact x-ray micrographs can be made of unfixed, intact endospores that reveal sites of elemental localization. This study presents new data demonstrating the application of x-ray absorption edge imaging to produce elemental information about nitrogen (N) and calcium (Ca) localization using Bacillus thuringiensis as the test specimen.

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