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CRYSTAL DETECTOR [2 records]
Record 1 - internal organization data 1998-05-23
Record 1, English
Record 1, Subject field(s)
- Medical and Surgical Equipment
- Medical Imaging
Record 1, Main entry term, English
- crystal detector
1, record 1, English, crystal%20detector
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record 1, French
Record 1, Domaine(s)
- Équipement médico-chirurgical
- Imagerie médicale
Record 1, Main entry term, French
- détecteur à cristal
1, record 1, French, d%C3%A9tecteur%20%C3%A0%20cristal
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- détecteur cristallin 1, record 1, French, d%C3%A9tecteur%20cristallin
correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Détecteur de rayonnement employant comme substance scintillatrice un cristal d'iodure de sodium, d'iodure de césium, de germanate de bismuth, de tungstate de cadmium, de fluorine de calcium ou d'autres compositions. 1, record 1, French, - d%C3%A9tecteur%20%C3%A0%20cristal
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 1996-05-13
Record 2, English
Record 2, Subject field(s)
- Analytical Chemistry
Record 2, Main entry term, English
- crystal detector 1, record 2, English, crystal%20detector
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
A simple arrangement of two cavities in series showed the feasibility of detecting traces of one gas in another. A klystron was used to generate microwave power which was fed through a wave guide to a transmission-type cavity. Another cavity was mounted in series with and tuned to the same frequency as the first; both cavities were identical except that the second had a gas inlet and outlet ports. From this measuring cell, its microwave energy was sent to a crystal detector. By frequency-modulating the klystron with a 50-cps sine wave voltage on the repeller, a burst of energy passes to the detector each time the generator frequency equals that of the cavities. The detector current is amplified and measured with an oscilloscope. At the beginning of the run, the two cavities are filled with the nitrogen carrier gas and, if the composition in one of the cavities is changed, its electrical size will change ... causing a decrease of current from the detector. 1, record 2, English, - crystal%20detector
Record 2, French
Record 2, Domaine(s)
- Chimie analytique
Record 2, Main entry term, French
- détecteur au cristal
1, record 2, French, d%C3%A9tecteur%20au%20cristal
proposal, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record 2, Spanish
Record 2, Textual support, Spanish
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