EFFECTS OF X-IRRADIATION ON THE NEAR ULTRAVIOLET ABSORPTION SPECTRUM OF FERROELECTRIC TRIGLYCINE SULFATE

Journal Article · Sun May 01 04:00:00 EDT 1960 · Spectrochimica Acta (England) Divided into Spectrochim. Acta, Part A and Spectrochim. Acta, Part B

DOI:https://doi.org/10.1016/0371-1951(60)80035-5· OSTI ID:4138141

Dodd, D M

After a dosage of only 1 x 10/sup 5/ r, a weak absorption band is seen at 255 m mu in the near ultraviolet spectrum of crystalline triglycine sulfate (TGS). The intensity of this band increases with x-ray treatment until, after a total dosage of about 3 x 10/sup 6/ r, it is so strong that the ultraviolet cutoff is effectively shifted from the original 255 M mu (5-5 ev) poaition to around 293 M mu (4.2 ev). Because the change decays neither with time at room temperature nor with the application of heat, it must be of a chemical nature and not due to color centers. The gaseous x-ray decomposition products of crystalline TGS are found to be SO/sub 2/, CO/sub 2/, and H/sub 2/, but these are not responsible for the 255 M mu absorption band. The relative amounts of the gaseous products indicate that x-rays cause decarboxylation of some of the glycine units and disintegration of a smaller proportion of the sulfate groups. The effects of xirradiation on crystalline glycine are quite different from those on crystalline TGS. (auth)

• Research Organization: Bell Telephone Labs., Inc., Murray Hill, N.J.
• NSA Number: NSA-14-016056
• OSTI ID: 4138141
• Journal Information: Spectrochimica Acta (England) Divided into Spectrochim. Acta, Part A and Spectrochim. Acta, Part B, Journal Name: Spectrochimica Acta (England) Divided into Spectrochim. Acta, Part A and Spectrochim. Acta, Part B Vol. Vol: 16; ISSN SPACA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
AMINO ACIDS
ANNEALING
CARBON DIOXIDE
CHEMICAL REACTIONS
CRYSTALS
DECARBOXYLATION
DECOMPOSITION
DEFECTS
FERROMAGNETIC MATERIALS
GASES
GLYCINE
HYDROGEN
METALS, CERAMICS, AND OTHER MATERIALS
RADIATION EFFECTS
SPECTRA
SPECTRAL SHIFT
SULFATES
SULFUR OXIDES
ULTRAVIOLET RADIATION
X RADIATION