TY - JOUR
T1 - A SCALAR IRRADIANCE FIBER‐OPTIC MICROPROBE FOR THE MEASUREMENT OF ULTRAVIOLET RADIATION AT HIGH SPATIAL RESOLUTION
AU - Garcia‐Pichel, Ferran
PY - 1995/3
Y1 - 1995/3
N2 - Abstract— The construction of a new type of microprobe for the measurement of scalar irradiance (integral dose rate) in the UV down to wavelengths of 250 nm is described. The microprobes were made from tapered standard optical fibers and a tip‐diffuser of magnesia/silica vitroceramic. The sensing tips were ca 100 μm in diameter and had maximal deviations in the angular response of ± 15%. I present measurements of scalar irradiance at high spatial resolution within dry beach sand and suspensions of microorganisms. These two media are environments in which microorganisms are exposed to UV, either under natural (sand) or laboratory conditions (suspensions). In both cases, the space distribution of UV scalar irradiance, and thus the distribution of integral dose rates, departed significantly from that predicted by absorptive effects alone. The results underscore the importance of small‐scale, in situ measurements of scalar irradiance for UV dosimetry in such scattering media.
AB - Abstract— The construction of a new type of microprobe for the measurement of scalar irradiance (integral dose rate) in the UV down to wavelengths of 250 nm is described. The microprobes were made from tapered standard optical fibers and a tip‐diffuser of magnesia/silica vitroceramic. The sensing tips were ca 100 μm in diameter and had maximal deviations in the angular response of ± 15%. I present measurements of scalar irradiance at high spatial resolution within dry beach sand and suspensions of microorganisms. These two media are environments in which microorganisms are exposed to UV, either under natural (sand) or laboratory conditions (suspensions). In both cases, the space distribution of UV scalar irradiance, and thus the distribution of integral dose rates, departed significantly from that predicted by absorptive effects alone. The results underscore the importance of small‐scale, in situ measurements of scalar irradiance for UV dosimetry in such scattering media.
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U2 - 10.1111/j.1751-1097.1995.tb03967.x
DO - 10.1111/j.1751-1097.1995.tb03967.x
M3 - Article
AN - SCOPUS:84989741595
SN - 0031-8655
VL - 61
SP - 248
EP - 254
JO - Photochemistry and photobiology
JF - Photochemistry and photobiology
IS - 3
ER -