Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Takashi, Yawata"'
Publikováno v:
In Radiation Measurements 2006 41(7):841-846
Autor:
Takashi Yawata, Tetsuo Hashimoto
Publikováno v:
Radiation Measurements. 42:1460-1468
Red thermoluminescence (RTL) of natural quartz grains offers many desirable properties for quaternary chronology and archaeological dating, although RTL measurements suffer from high thermal background due to black-body radiation on heating. To reduc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52c4ea5fe10cfe6c99ef178b20a6fede
https://doi.org/10.1016/j.radmeas.2007.03.008
https://doi.org/10.1016/j.radmeas.2007.03.008
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 273:353-356
In most established method for luminescence dating, the ratio of 90Sr/90Y radionuclides has been employed to provide reference laboratory doses to sample. Recently a small X-ray irradiator (Varian VF-50J) was introduced as an alternative to the tradi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ff4098e8aa612c02e626bea4bc4ee63
https://doi.org/10.1007/s10967-007-6874-z
https://doi.org/10.1007/s10967-007-6874-z
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 258:375-380
Luminescence excited by a small X-ray generator (Varian VF-50J) instead of the usual 90 Sr– 90 Y beta source was measured following optical stimulation. The optimal X-ray irradiation conditions have been assessed, including the irradiation dose rat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::329606063d2d64141b837f2f39a38ace
https://doi.org/10.1016/j.nimb.2007.02.086
https://doi.org/10.1016/j.nimb.2007.02.086
Publikováno v:
Radiation Measurements. 42:341-346
Quartz samples of three different origins were γ -irradiated with 20 kGy at room temperature or at the temperature of liquid nitrogen ( - 196 ∘ C ) , and analyzed by on-line TL-emission spectrometry over two temperature ranges: above 200 °C (high
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b316219931f9a7cbaa87432c6e9735f
https://doi.org/10.1016/j.radmeas.2007.02.064
https://doi.org/10.1016/j.radmeas.2007.02.064
Publikováno v:
Radiation Measurements. 41:671-676
On Z -cut slices of a natural quartz crystal, color center images and thermoluminescence (above room temperature) color images were compared together with the distributions of Al and OH group (and molecular H 2 O) impurities in infrared spectra. Dens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a1847d0ddb663cdf2bdc6b9373f0901
https://doi.org/10.1016/j.radmeas.2006.04.011
https://doi.org/10.1016/j.radmeas.2006.04.011
Publikováno v:
Transactions of the Atomic Energy Society of Japan. 5:221-228
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4eb5e1459d8dd6d29b88885b166b4f97
https://doi.org/10.3327/taesj2002.5.221
https://doi.org/10.3327/taesj2002.5.221
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 265:495-498
A small X-ray irradiator (Varian VF-50J X-ray tube) has some advantages over the conventional radioactive sources for equivalent dose determination, as required for example in the process of luminescence dating of sediments and sherds. One advantage
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d284de8f8bc9f4c36bd089d6a5c0fc6c
https://doi.org/10.1007/s10967-005-0853-z
https://doi.org/10.1007/s10967-005-0853-z
Autor:
Tetsuo Hashimoto, Takashi Yawata
Publikováno v:
Quaternary Science Reviews. 23:1183-1186
In an earlier study, we found that quartz grains extracted from Niigata dune sand all contained red thermoluminescence (RTL) phenomena. This RTL could subsequently be attributed to the volcanic origin of the material. The Agano River is assumed to be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7edd01acebdf37bbcf1fe7cc770b130b
https://doi.org/10.1016/j.quascirev.2003.09.010
https://doi.org/10.1016/j.quascirev.2003.09.010
Autor:
Takashi Yawata, Tetsuo Hashimoto
Publikováno v:
RADIOISOTOPES. 53:207-212
天然石英粒子は環境中の電離放射線との相互作用の結果, 放射線損傷を蓄積し様々な発光 (ルミネッセンス) 現象を示す。この蓄積放射線損傷由来のルミネッセンス現象は, 最後に刺激を
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74380ba81692623b871a9be4751af4ed
https://doi.org/10.3769/radioisotopes.53.207
https://doi.org/10.3769/radioisotopes.53.207