TY - JOUR
T1 - Gamma-ray induced 2 ev optical absorption band in pure-silica core fibers
AU - Nagasawa, Kaya
AU - Ohki, Yoshimichi
AU - Hama, Yoshimasa
PY - 1987/6
Y1 - 1987/6
N2 - Gamma-ray induced 2 eV band appears at different wavelengths depending on the OH-group content. It is found that 2 eV band formed in low-OH content fibers, formerly ascribed to another precursor, is caused by non-bridging oxygen hole centers (NBOHC, Si-Oƃ), as is the one formed in high-OH content fibers. The differences in peak wevelength and in oscillator strength are responsible for hydrogen bonding between NBOHC and a nearby OH-group. The NBOHC with a hydrogen bond in the shape of Si-OƃƃƃƃH-O-Si formed more in high-OH content fibers absorbs light around 600 nm, while it absorbs around 630 nm when it exists without forming a hydrogen bond (Si-Oƃ).
AB - Gamma-ray induced 2 eV band appears at different wavelengths depending on the OH-group content. It is found that 2 eV band formed in low-OH content fibers, formerly ascribed to another precursor, is caused by non-bridging oxygen hole centers (NBOHC, Si-Oƃ), as is the one formed in high-OH content fibers. The differences in peak wevelength and in oscillator strength are responsible for hydrogen bonding between NBOHC and a nearby OH-group. The NBOHC with a hydrogen bond in the shape of Si-OƃƃƃƃH-O-Si formed more in high-OH content fibers absorbs light around 600 nm, while it absorbs around 630 nm when it exists without forming a hydrogen bond (Si-Oƃ).
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U2 - 10.1143/JJAP.26.L1009
DO - 10.1143/JJAP.26.L1009
M3 - Article
AN - SCOPUS:0023365286
SN - 0021-4922
VL - 26
SP - 1009
EP - 1011
JO - Japanese journal of applied physics
JF - Japanese journal of applied physics
IS - 6A
ER -