RADIATION MEASUREMENTS: COMPARISON OF RADIOLYSIS EFFECTS OF COBALT-60 GAMMA RAYS AND 3-6 Mev ELECTRONS ON NITRIL SYSTEMS

Journal Article · Wed Oct 23 04:00:00 EDT 1963 · Annals of the New York Academy of Sciences (U.S.)

DOI:https://doi.org/10.1111/j.1749-6632.1963.tb42954.x· OSTI ID:4132502

Miller, G H; Martin, J J

Acetonitrile was irradiated with Co/sup 60/ at 0.4to 0.7 megarads per hr and in a linear accelerator at 3.5 to 4 Mev. Radiolysis product identities and yields were determined by a combination of infrared, low, and high mass, and nuclear magnetic resonance spectroscopy, by gas chromatography, and by CN analysis. Purified acetonitrile was found to make a satisfactory dosimeter over the range examined, 1 x 10/sup 6/ to 6.5 x 10/sup 8/ rads. The weight per cent yield of CN is an exponential function of total dose in megarads, as given by: CN = (0.005) (Dose)/sup 0.8245/. The principal gaseous products are H/sub 2/ (G =- 0.58) and CH/sub 4/ (G = 0.83), with minor yields of NH/sub 3/, C/sub 2/H/sub 6/, C/sub 2/H/sub 2/, N/sub 2/, HCN, C/ sub 3/H/sub 8/, and C/sub 6/H/sub 10/. Identified heavier products are C/sub 2/, Ca, and C/sub 4/ aliphatic nitriles, succinonitrile, malononitrile, and acetonitrile dimer (3-iminobutyronitrile). A complex polymer (G = 8) contains imine or amine and nitrile groups, the C-H-N proportions approach (CH/sub 3/CN)/sub x/, and the measured CN yield used in dosimetry is largely contained in the polymer. The high instantaneous dose-rate electron beam was not significantly different in its action from gamma radiation, as judged by hydrogen and CN yields. (P.C.H.)

• Research Organization: Univ. of Michigan, Ann Arbor
• Sponsoring Organization: USDOE
• NSA Number: NSA-18-005364
• OSTI ID: 4132502
• Journal Information: Annals of the New York Academy of Sciences (U.S.), Journal Name: Annals of the New York Academy of Sciences (U.S.) Vol. Vol: 105; ISSN ANYAA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACETIC ACID
AMINES
CHEMISTRY
CHROMATOGRAPHY
COBALT 60
CYANIDES
DECOMPOSITION
ELECTRON BEAMS
G-VALUE
GAMMA RADIATION
GAMMA SOURCES
GASES
IMINES
INFRARED RADIATION
IRRADIATION
LINEAR ACCELERATORS
MALONIC ACID
MASS SPECTROMETERS
NITRILES
NUCLEAR MAGNETIC RESONANCE
ORGANIC ACIDS
ORGANIC NITROGEN COMPOUNDS
POLYMERS
RADIATION CHEMISTRY
RADIOLYSIS
SPECTROSCOPY
SUCCINIC ACID