NDLI: External Micro-PIXE Measurements: Preliminary Results on Volcanic Rocks from Nyiragongo Volcano

Content Provider	Springer Nature Link
Author	Santo, Alba P. Fedi, Mariaelena Giuntini, Lorenzo Mandò, Pier Andrea Massi, Mirko Taccetti, Francesco
Copyright Year	2006
Abstract	The external microbeam facility at the 3 MV Tandetron accelerator of the LABEC Laboratory of INFN in Florence has been used to determine, by PIXE, major, minor and trace element abundances of minerals and groundmass in the lavas from the active Nyiragongo Volcano (Democratic Republic of Congo), which is well known for its lava lake intra-crateric activity [e.g. 1, 2]. During the last eruption of this volcano (January, 2002), two main flows entered the Goma town producing major devastation, forcing the rapid exodus of about 300,000 people and causing the death of 150 persons [3]. After this eruption, the interest of the scientific community on this volcanic area suddenly increased. In this respect, determination of major and trace element abundances in mineral phases and groundmass of lavas may allow to constrain the evolution of magma within the volcanic system from a quantitative view point, thus helping to better understand the way this volcano works.PIXE measurements have been performed in a two-detector setup that makes it possible to simultaneously detect and quantify all elements from Na to the heaviest ones; possible compositional zoning effects in the crystals can also be reliably measured thanks to the good space resolution of the microbeam facility (better than 10 µm) and to the possibility of performing one- and bi-dimensional scans over the areas of interest. Concentration maps of all elements can be obtained, both on-line and a posteriori: the data are collected with a list-mode acquisition system, which allows the distribution of any detected element to be reconstructed after completing the scan.
Starting Page	263
Ending Page	267
Page Count	5
File Format	PDF
ISSN	00263672
Journal	Microchimica Acta
Volume Number	155
Issue Number	1-2
e-ISSN	14365073
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-05-15
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Analytical Chemistry Inorganic Chemistry Physical Chemistry Characterization and Evaluation Materials Monitoring/Environmental Analysis/Environmental Ecotoxicology
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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