THE RADIOLYSIS OF METHANOL AND METHANOLIC SOLUTIONS. II. COMPARISON OF RADIOLYSIS BY Co$sup 60$ $gamma$-RAYS AND BY B$sup 10$(n,/cap alpha/)Li$sup 7$ RECOILS

Journal Article · Wed Nov 20 04:00:00 EST 1963 · Journal of the American Chemical Society (U.S.)

DOI:https://doi.org/10.1021/ja00905a008· OSTI ID:4145938

Imamura, M; Choi, S U; Lichtin, N N

At recoil dose rates in the vicinity of 4.5 x 10/sup 15/ ev ml/sup -1/ min/sup -1/ G(H/sub 2/) = 4.99 plus or minus 0.38, G(CH/sub 4/) = 0.57 plus or minus 0.14 G(CO) == 1.00 plus or minus 0.13, G(CH/sub 2/O) = 3.15 plus or minus 0.38, G(C/sub 2/H/sub 6/O/sub 2/) = 0.60 plus or minus 0.09, independent of dose over the range (0.44--10.8) x 10/sup 19/ ev ml/sup -1/ and of dose rate over the range (0.33-25) x 10/sup 15/ ev ml/sup -1/ min/sup -1/. All yields are insensitive to added KI up to O.1 M. The effects of change in LET by a factor of 10/sub 3/ are rationalized tentatively on the basis that there is little variation in initial relative abundance of primary radical and molecular products but that reactions of higher than first order in primary radicals are of increased importance. Satisfactory reproducibility in the Co/sup 60/ gamma radiolysis of pure methanol was not obtained. Alkali fluorides, chlorides, and bromides all reduce G(H/sub 2/) but have no significant effects on other yields. Alkali iodides also reduce G(H/sub 2/) from Co/sup 60/ gamma radiolysis and, in addition, decrease G(C/sub 2/H/sub 6/O/sub 2/) and increase G(CH/sub 2/O) by equal amounts without significant formation of iodine. This observation can be rationalized by the coupled reduction of CH/sub 3/O and oxidation of CH/sub 2/OH by I/sup -/ and I, respectively. (auth)

• Research Organization: Boston Univ.
• Sponsoring Organization: USDOE
• NSA Number: NSA-18-001746
• OSTI ID: 4145938
• Journal Information: Journal of the American Chemical Society (U.S.), Journal Name: Journal of the American Chemical Society (U.S.) Vol. Vol: 85; ISSN JACSA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ADDITIVES
ALKALI METALS
ALPHA PARTICLES
BORON 10
BROMIDES
CALIFORNIUM 252
CAPTURE
CHEMISTRY
CHLORIDES
COBALT 60
CROSS SECTIONS
DECOMPOSITION
DECONTAMINATION
EFFICIENCY
ENERGY
ENERGY LOSSES
EXCITATION
FISSION
FLUORIDES
G-VALUE
GAMMA RADIATION
LET
LITHIUM 7
METHANOL
NEUTRON BEAMS
NEUTRONS
NUCLEAR MODELS
NUCLEAR REACTIONS
OPTICAL MODEL
POTASSIUM IODIDES
RADIATION CHEMISTRY
RADIATIONS
RADIOLYSIS
RECOILS
SOLUTIONS
SPECTRA
URANIUM 235