Plagioclase Studies by Ionoluminescence (IL) and Particle-Induced X-Ray Emission (PIXE) Employing a Nuclear Microprobe
When an ion beam in the energy range of a few MeV/amu impacts on a mineral, visible light can often be observed. This light, termed ionoluminescence (IL), has been shown to be a very useful tool for investigating geological specimens when it is combined in a nuclear microprobe with a well-establishe...
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ftutahsudc:oai:digitalcommons.usu.edu:microscopy-1408 2023-05-15T16:03:50+02:00 Plagioclase Studies by Ionoluminescence (IL) and Particle-Induced X-Ray Emission (PIXE) Employing a Nuclear Microprobe Homman, N. P. -O. Yang, C. Malmqvist, K. G. Hanghöj, K. 1995-01-01T08:00:00Z application/pdf https://digitalcommons.usu.edu/microscopy/vol1995/iss9/12 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1408&context=microscopy unknown DigitalCommons@USU https://digitalcommons.usu.edu/microscopy/vol1995/iss9/12 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1408&context=microscopy Scanning Microscopy IL CL PIXE nuclear microprobe beam damage oxidation state Fe3+ plagioclase orthoclase albite Biology text 1995 ftutahsudc 2022-03-07T20:50:11Z When an ion beam in the energy range of a few MeV/amu impacts on a mineral, visible light can often be observed. This light, termed ionoluminescence (IL), has been shown to be a very useful tool for investigating geological specimens when it is combined in a nuclear microprobe with a well-established, quantitative, trace element method such as Particle Induced X-ray Emission (PIXE). When plagioclases from the Skaergaard intrusion, East Greenland, were irradiated with protons, bluish luminescence was observed. Spectroscopic IL studies were undertaken with 1.5 and 2.5 MeV protons with power densities ranging from about 6 to 160 W/cm2. In the IL spectra of the plagioclase specimens, four emission bands were observed, peaking at about 4200, 4600, 5500, and 7500 A, respectively. The relative intensities of the emission bands in the short wavelength region were rather constant for all samples, except for the long wavelength band, activated by Fe3+ and peaking at 7500 A, which varied considerably. Variation in the oxidation states of the samples was investigated by measuring the Fe3+ intensity from IL normalized to the total iron concentration as obtained by PIXE. The relationship between the Fe3+-activated peak area normalized to the total iron content and the expected relative oxidation state was found to be relevant. Text East Greenland Greenland Utah State University: DigitalCommons@USU Greenland |
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Utah State University: DigitalCommons@USU |
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ftutahsudc |
language |
unknown |
topic |
IL CL PIXE nuclear microprobe beam damage oxidation state Fe3+ plagioclase orthoclase albite Biology |
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IL CL PIXE nuclear microprobe beam damage oxidation state Fe3+ plagioclase orthoclase albite Biology Homman, N. P. -O. Yang, C. Malmqvist, K. G. Hanghöj, K. Plagioclase Studies by Ionoluminescence (IL) and Particle-Induced X-Ray Emission (PIXE) Employing a Nuclear Microprobe |
topic_facet |
IL CL PIXE nuclear microprobe beam damage oxidation state Fe3+ plagioclase orthoclase albite Biology |
description |
When an ion beam in the energy range of a few MeV/amu impacts on a mineral, visible light can often be observed. This light, termed ionoluminescence (IL), has been shown to be a very useful tool for investigating geological specimens when it is combined in a nuclear microprobe with a well-established, quantitative, trace element method such as Particle Induced X-ray Emission (PIXE). When plagioclases from the Skaergaard intrusion, East Greenland, were irradiated with protons, bluish luminescence was observed. Spectroscopic IL studies were undertaken with 1.5 and 2.5 MeV protons with power densities ranging from about 6 to 160 W/cm2. In the IL spectra of the plagioclase specimens, four emission bands were observed, peaking at about 4200, 4600, 5500, and 7500 A, respectively. The relative intensities of the emission bands in the short wavelength region were rather constant for all samples, except for the long wavelength band, activated by Fe3+ and peaking at 7500 A, which varied considerably. Variation in the oxidation states of the samples was investigated by measuring the Fe3+ intensity from IL normalized to the total iron concentration as obtained by PIXE. The relationship between the Fe3+-activated peak area normalized to the total iron content and the expected relative oxidation state was found to be relevant. |
format |
Text |
author |
Homman, N. P. -O. Yang, C. Malmqvist, K. G. Hanghöj, K. |
author_facet |
Homman, N. P. -O. Yang, C. Malmqvist, K. G. Hanghöj, K. |
author_sort |
Homman, N. P. -O. |
title |
Plagioclase Studies by Ionoluminescence (IL) and Particle-Induced X-Ray Emission (PIXE) Employing a Nuclear Microprobe |
title_short |
Plagioclase Studies by Ionoluminescence (IL) and Particle-Induced X-Ray Emission (PIXE) Employing a Nuclear Microprobe |
title_full |
Plagioclase Studies by Ionoluminescence (IL) and Particle-Induced X-Ray Emission (PIXE) Employing a Nuclear Microprobe |
title_fullStr |
Plagioclase Studies by Ionoluminescence (IL) and Particle-Induced X-Ray Emission (PIXE) Employing a Nuclear Microprobe |
title_full_unstemmed |
Plagioclase Studies by Ionoluminescence (IL) and Particle-Induced X-Ray Emission (PIXE) Employing a Nuclear Microprobe |
title_sort |
plagioclase studies by ionoluminescence (il) and particle-induced x-ray emission (pixe) employing a nuclear microprobe |
publisher |
DigitalCommons@USU |
publishDate |
1995 |
url |
https://digitalcommons.usu.edu/microscopy/vol1995/iss9/12 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1408&context=microscopy |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland Greenland |
genre_facet |
East Greenland Greenland |
op_source |
Scanning Microscopy |
op_relation |
https://digitalcommons.usu.edu/microscopy/vol1995/iss9/12 https://digitalcommons.usu.edu/cgi/viewcontent.cgi?article=1408&context=microscopy |
_version_ |
1766399526058328064 |