Download or read book The Preparation and Characterisation of a 1 1 1 233U 235U 238U Isotopic Mixture for Use as a Reference Material for Mass Spectrometric Analysis written by A.J. Wood and published by . This book was released on 1987 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Preparation and Characterisation of a 3 3 3 1 Mixture of a 239Pu 240Pu 242Pu 244Pu for Use as an Isotopic Reference Materials for Mass Spectrometric Analysis written by E. Foster and published by . This book was released on 1989 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Uranium Isotopic Standard Reference Materials written by E. L. Garner and published by . This book was released on 1971 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Standard Reference Materials Uranium Isotopic Standard Reference Materials written by L. E. Garner and published by . This book was released on 1971 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The preparation and characterisation of a 3 3 3 1 mixture of 239Pu 240Pu 242Pu 244Pu for use as an isotopic reference material for mass spectrometric analysis written by E. Foster and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Radioactivity Analysis written by Michael F. L'Annunziata and published by Academic Press. This book was released on 2012-08-16 with total page 1420 pages. Available in PDF, EPUB and Kindle. Book excerpt: Authoritative reference providing the principles, practical techniques, and procedures for the accurate measurement of radioactivity.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1974 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt: NSA is a comprehensive collection of international nuclear science and technology literature for the period 1948 through 1976, pre-dating the prestigious INIS database, which began in 1970. NSA existed as a printed product (Volumes 1-33) initially, created by DOE's predecessor, the U.S. Atomic Energy Commission (AEC). NSA includes citations to scientific and technical reports from the AEC, the U.S. Energy Research and Development Administration and its contractors, plus other agencies and international organizations, universities, and industrial and research organizations. References to books, conference proceedings, papers, patents, dissertations, engineering drawings, and journal articles from worldwide sources are also included. Abstracts and full text are provided if available.
Download or read book The preparation and characterisation of a 34 atomic mixture of 240Pu 239Pu for use as an isotopic reference material for mass spectrometric analysis written by E. Foster and published by . This book was released on 1989 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Isotopic Measurements of Highly Enriched 233U 235U 236U and 238U Starting Materials for the Preparation of Synthetic Isotope Mixtures written by and published by . This book was released on 2006 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced mass spectrometric methods are described for the isotopic characterization of highly enriched 233U, 235U, 236U and 238U materials, using state-of-the-art TIMS (Thermal Ionization Mass Spectrometry) technology. The isotopic enrichments of the 233U, 235U, 236U and 238U materials (BC02153, BC02154, BC02676, BC02155) were determined by mass spectrometry to be 99.962754(47)%, 99.989978(12)%, 99.973345(39)% and 99.9999486(14)%, respectively. The high isotopic enrichments and the small uncertainties on the measured isotopic ratios make these materials very suitable as starting materials for various types of synthetic isotope mixtures currently in production at IRMM.
Download or read book Introduction to Focused Ion Beams written by Lucille A. Giannuzzi and published by Springer Science & Business Media. This book was released on 2006-05-18 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to Focused Ion Beams is geared towards techniques and applications. This is the only text that discusses and presents the theory directly related to applications and the only one that discusses the vast applications and techniques used in FIBs and dual platform instruments.
Download or read book Preparation and Certification of the Uranium Nitrate Solution Series IRMM 2019 2029 written by and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the certification of the IRMM-2019-2029 series of uranium nitrate solution reference materials and the revision of the uranium hexafluoride (UF6) reference materials series IRMM-019-029, both certified for the uranium isotopic composition. The certified values and their uncertainties were assigned following ISO 17034 [1], ISO Guide 35 [2] and the Guide to the Expression of Uncertainty in Measurement [3]. The IRMM-019-029 series of eleven uranium hexafluoride (UF6) reference materials was originally produced and certified in the 1980's-1990's. For the first re-certification performed in 2014, the UF6 materials were converted into eleven uranium nitrate solutions to perform the homogeneity and characterisation studies. These materials were characterised in compliance with ISO 17034 [1] by Thermal Ionisation Mass Spectrometry (TIMS), by taking advantage of newly established measurement procedures such as the Modified Total Evaporation (MTE) and Double Spike (DS) methods, and using a new set of certified uranium isotope reference materials, which were prepared by gravimetrical mixing of highly enriched 233U, 235U, 236U and 238U oxides or solutions. The results of the characterisation measurements were also confirmed by Gas Source Mass Spectrometry (GSMS) measurements using the original UF6 gases [4, 5]. For the certification of the isotopic composition of the IRMM-2019-2029 series each of the remaining uranium nitrate solutions used for the certification of IRMM-019-029 was diluted using one molar nitric acid to a concentration of about 2 mg uranium per g solution and dispensed into cleaned screw-cap quartz ampoules. Each ampoule contains 5 ml of solution. Subsequently "process control measurements" (PCM) by TIMS using the MTE and DS methods were performed for three ampoules for each of the reference materials. The results for the isotopic composition from the process control measurements on these uranium nitrate solutions agreed well with the certified values for IRMM-019-029 series of UF6 materials. Therefore no separate new characterisation and homogeneity studies were performed, and the certified values for IRMM-019-029 were assigned as well to the uranium solution reference material series IRMM-2019-2029. Moreover, certified values for both the IRMM-019-029 series of UF6 reference materials and the IRMM-2019-2029 series of uranium nitrate solution reference materials were established using new published values for the atomic masses and applying a 2-digit rounding rule. The materials are intended for the calibration of instruments, methods, quality control purposes, and the assessment of method performance for isotope mass spectrometry. As with any certified reference material, they can also be used for validation studies.
Download or read book Preparation and Certification of Uranium QUAD Isotopic Reference Materials IRMM 3100 and IRMM 3102 written by and published by . This book was released on 2008 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Isotopic reference material IRMM-3101 was prepared by mixing of solutions from highly enriched 99.96% 233U (IRMM-3630), 99.994% 235U (IRMM-3650), 99.97% 236U (IRMM-3660) and 99.99998% 238U (IRMM-3680) in order to obtain an isotopic ratio n(233U)/n(235U)/n(236U)/n(238U) close to unity. IRMM-3100 and IRMM-3102 were prepared from IRMM-3101 by gravimetrical dilution. The certified isotope amount ratio for ratio n(233U)/n(236U) has been established by mass metrology and was verified by isotope mass spectrometry. The methodology used in the preparation and certification was similar to that of comparable uranium mixtures made in the past. The certified ratios n(234U)/n(236U), (235U)/n(236U) and (238U)/n(236U) have been achieved by TIMS using the n(233U)/n(236U) as internal standard. Verification of the Quad isotopic reference material was performed on two independent TRITON by TIMS multidynamic measurements on Faraday collectors. The results agreed well with the certified values obtained from the mixing calculations. The Isotopic Reference Materials IRMM-3100, IRMM-3101 and IRMM-3102 are part of a systematic IRMM programme to supply Isotopic Reference Materials of various isotopes at different concentrations. The Isotopic Reference Material is supplied in a polyethylene ampoule containing 1 mL of a 1 M nitric acid solution.
Download or read book The Preparation and Characterisation of a 1 1 1 Mixture of 239Pu 240Pu 224Pu for Use as a Reference Material for Mass Spectrometric Analysis written by D. Crossley and published by . This book was released on 1988 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preparation and Verification of QUAD Uranium Isotopic Reference Material IRMM 3100a written by and published by . This book was released on 2010 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The isotopic reference material IRMM-3100a was prepared by gravimetrical dilution of IRMM-3101. The primary solution IRMM-3101 was designed such that the material consists of equivalent parts of four individual isotopes n(233U)/n(235U)/n(236U)/n(238U) with a ratio of one. The certified isotope amount ratio2 for ratio n(233U)/n(236U) has been established by mass metrology and was verified by isotope mass spectrometry. The certified ratios n(234U)/n(236U), n(235U)/n(236U) and n(238U)/n(236U) have been measured by TIMS in multi-dynamic mode and using the n(233U)/n(236U) ratio for internal normalization. The preparation of IRMM-3101 is in full described elsewhere. [1] The Isotopic Reference Material IRMM-3100a is part of a systematic IRMM programme to supply Isotopic Reference Materials of various isotopes at different concentrations. The Isotopic Reference Material is supplied in a quartz ampoule containing 0.5 mL of a 1 M nitric acid solution.
Download or read book Journal of Radioanalytical Chemistry written by and published by . This book was released on 1980 with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Preparation and Characterisation of a 1 1 1 Mixture of 23 p9 sPu 240Pu 242Pu for Use as a Reference Material for Mass Spectrometric Analysis written by D. Crossley and published by . This book was released on 1988 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
