Abstract
Quartz extracts, from a pegmatite rock, volcanic ashes and beach sands, were exposed to X-rays or gamma-rays upto 8.8kGy. The irradiated sands were observed through a thermoluminescence colour image technique (abbreviated to TLCI by the authors) using highly sensitive colour photographic system. The quartz sands from volcanic ash layers, containing ..beta..-quartz (mineralized at high temperature), always indicate a red TLCI, whereas the quartz rocks from pegmatite origin and granite strata, containing ..cap alpha..-quartz (mineralized at low temperature), gave a typical blue TLCI, being consistent with the well known quartz TL colour. Quartz fractions from the beach sands showed a mixture of both red and blue TLCI, probably reflecting the respective mixtures of ..beta..-(in their origin) and ..cap alpha..-quartz fractions along the riverside area. The search using X-ray diffractometry and instrumental neutron activation analysis proved that the cause of distinctly different colourations was attributable to the impurity atoms: light rare earth elements (Eu and/or Sm) bringing on red TLCI, while structural defects yielding the blue TLCI).
Citation Formats
Hashimoto, T, Hayashi, Y, Koyanagi, A, Yokosaka, K, and Kimura, K.
Red and blue colouration of thermoluminescence from natural quartz sands.
United Kingdom: N. p.,
1986.
Web.
doi:10.1016/1359-0189(86)90039-7.
Hashimoto, T, Hayashi, Y, Koyanagi, A, Yokosaka, K, & Kimura, K.
Red and blue colouration of thermoluminescence from natural quartz sands.
United Kingdom.
https://doi.org/10.1016/1359-0189(86)90039-7
Hashimoto, T, Hayashi, Y, Koyanagi, A, Yokosaka, K, and Kimura, K.
1986.
"Red and blue colouration of thermoluminescence from natural quartz sands."
United Kingdom.
https://doi.org/10.1016/1359-0189(86)90039-7.
@misc{etde_5676577,
title = {Red and blue colouration of thermoluminescence from natural quartz sands}
author = {Hashimoto, T, Hayashi, Y, Koyanagi, A, Yokosaka, K, and Kimura, K}
abstractNote = {Quartz extracts, from a pegmatite rock, volcanic ashes and beach sands, were exposed to X-rays or gamma-rays upto 8.8kGy. The irradiated sands were observed through a thermoluminescence colour image technique (abbreviated to TLCI by the authors) using highly sensitive colour photographic system. The quartz sands from volcanic ash layers, containing ..beta..-quartz (mineralized at high temperature), always indicate a red TLCI, whereas the quartz rocks from pegmatite origin and granite strata, containing ..cap alpha..-quartz (mineralized at low temperature), gave a typical blue TLCI, being consistent with the well known quartz TL colour. Quartz fractions from the beach sands showed a mixture of both red and blue TLCI, probably reflecting the respective mixtures of ..beta..-(in their origin) and ..cap alpha..-quartz fractions along the riverside area. The search using X-ray diffractometry and instrumental neutron activation analysis proved that the cause of distinctly different colourations was attributable to the impurity atoms: light rare earth elements (Eu and/or Sm) bringing on red TLCI, while structural defects yielding the blue TLCI).}
doi = {10.1016/1359-0189(86)90039-7}
journal = []
volume = {11:4-5}
journal type = {AC}
place = {United Kingdom}
year = {1986}
month = {Jan}
}
title = {Red and blue colouration of thermoluminescence from natural quartz sands}
author = {Hashimoto, T, Hayashi, Y, Koyanagi, A, Yokosaka, K, and Kimura, K}
abstractNote = {Quartz extracts, from a pegmatite rock, volcanic ashes and beach sands, were exposed to X-rays or gamma-rays upto 8.8kGy. The irradiated sands were observed through a thermoluminescence colour image technique (abbreviated to TLCI by the authors) using highly sensitive colour photographic system. The quartz sands from volcanic ash layers, containing ..beta..-quartz (mineralized at high temperature), always indicate a red TLCI, whereas the quartz rocks from pegmatite origin and granite strata, containing ..cap alpha..-quartz (mineralized at low temperature), gave a typical blue TLCI, being consistent with the well known quartz TL colour. Quartz fractions from the beach sands showed a mixture of both red and blue TLCI, probably reflecting the respective mixtures of ..beta..-(in their origin) and ..cap alpha..-quartz fractions along the riverside area. The search using X-ray diffractometry and instrumental neutron activation analysis proved that the cause of distinctly different colourations was attributable to the impurity atoms: light rare earth elements (Eu and/or Sm) bringing on red TLCI, while structural defects yielding the blue TLCI).}
doi = {10.1016/1359-0189(86)90039-7}
journal = []
volume = {11:4-5}
journal type = {AC}
place = {United Kingdom}
year = {1986}
month = {Jan}
}