Accession Number:

AD0442445

Title:

INTERACTION OF SLOW ELECTRONS WITH CHEMISORBED OXYGEN,

Descriptive Note:

Corporate Author:

NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) RADIO AND ELECTRICAL ENGINEERING DIV

Personal Author(s):

Report Date:

1964-01-13

Pagination or Media Count:

20.0

Abstract:

Measurements have been made of the effects of low-energy electron bombardment 0-300 ev on a chemisorbed layer of oxygen on polycrystalline molybdenum. Oxygen is adsorbed in two states at room temperature with approximate heats of adsorp tion of 60 and 110 kcalmole, respectively. O ions are released from the weakly bound state with a maximum probability of 10 to the -5th power ionelectron at an electron energy of 90 ev. The ion-energy distribution has a maximum at about 6 ev and a half-width of 5 ev. About 50 neutrals are released for every ion. The measured threshold energy for ion formation is in good agreement with the calculated value. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE