Please wait, while we are loading the content...
Please wait, while we are loading the content...
| Content Provider | Springer Nature Link |
|---|---|
| Author | Gunnlaugsson, H. P. Bender Koch, C. Bharuth Ram, K. Dietrich, M. Helgason, Ö. Madsen, M. B. Mantovan, R. Naidoo, D. Steinthorsson, S. Vistisen, L. Weyer, G. |
| Copyright Year | 2008 |
| Abstract | At room temperature the 57Fe Mössbauer spectrum of chromite particles separated from the Martian meteorite Allan Hills 84001 is different from the Mössbauer spectrum of natural chromite. One hypothesis for this discrepancy is that the chromite in Allan Hills 84001 is found in a disordered or even amorphous state, possibly caused by a shock event. As a test of this hypothesis, we have attempted to amorphize natural chromite by ion implantation. 57Fe emission Mössbauer spectra of chromite implanted with radioactive precursor 57Mn ions have been measured. The spectra can be analyzed in terms of two contributions, a crystalline chromite fraction and a disordered fraction, attributed to disordered iron-chromium oxide or amorphous zones created by the implantation process. The Mössbauer parameters of the amorphous fraction are indistinguishable from those deduced from the spectrum of the chromite separate from Allan Hills 84001. A shock event is a likely explanation for these findings and with appropriate energy calibration this may possibly be used to estimate the intensity of the shock event that once modified minerals in the meteorite Allan Hills 84001. |
| Starting Page | 9 |
| Ending Page | 14 |
| Page Count | 6 |
| File Format | |
| ISSN | 03043843 |
| Journal | Hyperfine Interactions |
| Volume Number | 186 |
| Issue Number | 1-3 |
| e-ISSN | 15729540 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2008-10-11 |
| Publisher Place | Dordrecht |
| Access Restriction | Subscribed |
| Subject Keyword | Martian meteorite ALH 84001 Chromite particles Mössbauer spectroscopy Surfaces and Interfaces, Thin Films Condensed Matter Atoms, Molecules, Clusters and Plasmas Nuclear Physics, Heavy Ions, Hadrons |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nuclear and High Energy Physics Atomic and Molecular Physics, and Optics Physical and Theoretical Chemistry Condensed Matter Physics |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 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 |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|