Department of Applied Physics,Faculty of Science, Okayama Universityof Science/Department of Applied Physics,Faculty of Science, OkayamaUniversity of Science/Department of Applied Physics,Faculty of Science,Okayama University of Science/Department of Electronic Engineering,Faculty of Engineering, Okayama University of Science/Departmentof Electronic Engineering,Faculty of Engineering, Okayama University ofScience/Department of Physics,Faculty of Science, Okayama University/Department of Physics,Faculty of Science, Okayama University/Cosmochemistry Group, Department of Chemistry and Biochemistry,University of Arkansas/Cosmochemistry Group, Department of Chemistryand Biochemistry, University of Arkansas/Department of Geosciences,Faculty of Science, Naruto University of Education/Department ofGeosciences,Faculty of Science, Naruto University of Education
The spatial distribution of the induced thermoluminescence (TL) and TL glow curves of the primitive ordinary chondrites, Semarkona (LL3.0) and Bishunpur (LL3.1), were investigated over a wide range of wavelengths using a TL spatial distribution readout system. Although bulk samples of Semarkona and Bishunpur have very low TL sensitivity, individual chondrules show a wide variety of induced TL intensity and glow curve shape. Chondrules with anorthite-normative mesostases have especially high induced TL intensity, and their TL is produced at wavelengths >480nm, compared with <480nm for the sensitivity range of the usual TL measuring systems. Some of the metamorphism-dependent TL sensitivity of type 3 ordinary chondrite therefore results in changes in the spectrum of the light produced
Get PDF
