Accession Number:

AD0274798

Title:

THERMOLUMINESCENCE OF SOLID NITROGEN AFTER ELECTRON BOMBARDMENT AT 4.2 K

Descriptive Note:

Corporate Author:

CALIFORNIA UNIV BERKELEY

Report Date:

1961-08-31

Pagination or Media Count:

1.0

Abstract:

Solid N annea ed at 20 K and then bombarded with electrons at 4 K gives 3 glow peaks on warming, at 10, 14.5, and 19 K. Unannealed N gave broader peaks. A feeble, long-live low followed the normal afterglow after b ardment at 4 K. Thermal effects during warming were observed in one apparatus with radiation shielding at 77 K but they were not observed in a much more sensitive apparatus with radiation shielding at 4 K. The thermal effects were probably caused by an anomalous vapo pressre and loss of Dewar vacuum. The data are discussed with reference to 2 interpretations, the storage of supercript 2D excited N atoms and theecombtion superscript 4S atoms through diffusion. The latter explanation is preferred and a simple model is offered to account for the diffusion activation enthalpies implied by the 3 thermoluminescence peaks. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE