RADICAL SPECIES DETECTED IN $gamma$-IRRADIATED K$sup 14$NO$sub 3$ CRYSTALS BY ELECTRON PARAMAGNETIC RESONANCE

Journal Article · Mon Jan 01 04:00:00 EST 1962 · Phys. and Chem. Solids

DOI:https://doi.org/10.1016/0022-3697(62)90076-8· OSTI ID:4777411

Cunningham, J; McMillan, J A; Smaller, B; Yasaitis, E

Single crystals of K/sup 14/NO/sub 3/ and K/sup 15/NO/sub 3/, grown from aqueo us solution of purified salt, were gamma irradiated at 4.2 or 77 deg K. Five separate EPR signals were clearly distinguished and individually studied in empirically determined optimum conditions in both crystals. Comparable signals were observed in K/sup 15/NO/sub 3/, which showed the same symmetry properties but appeared as doublets with total hyperfine splitting (HFS) reduced, relative to the triplets in K/sup 14/NO/sub 3/, in the ratio of the nuclear magnetic moments of N/sup 15/ and N/sup 14/. The results are explained by attributing the EPR signals, termed triplets I, II, III, and IV, to radicals containing nitrogen. The characteristics of each triplet are discussed. (P.C.H.)

• Research Organization: Argonne National Lab., Ill.
• NSA Number: NSA-16-031655
• OSTI ID: 4777411
• Journal Information: Phys. and Chem. Solids, Journal Name: Phys. and Chem. Solids Vol. Vol: 23
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CHEMISTRY
CONFIGURATION
CRYSTALS
ELECTRONS
EXPANSION
GAMMA RADIATION
HYPERFINE STRUCTURE
IMPURITIES
MAGNETIC RESONANCE
MONOCRYSTALS
NITROGEN 14
NITROGEN 15
NUCLEAR MAGNETIC RESONANCE
POTASSIUM 41
POTASSIUM 45
POTASSIUM NITRATES
SIGNALS
SOLUTIONS
SPECTRAL SHIFT
SYMMETRY
TEMPERATURE
WATER