Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Michael R. Savina"'
Autor:
Michael R. Savina, Brett H. Isselhardt, Danielle Z. Shulaker, Martin Robel, Andrew J. Conant, Brian J. Ade
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-13 (2023)
Abstract Fission product Sr, Mo, and Ru isotopes in six 10-μm particles of spent fuel from a pressurized water reactor were analyzed by resonance ionization mass spectrometry (RIMS) and evaluated for utility in nuclear material characterization. Pre
Externí odkaz:
https://doaj.org/article/1a8f0ea4f4134bd4b70da0c4721b11c0
Publikováno v:
Journal of Analytical Atomic Spectrometry.
Uranium interference is a major problem in conventional 238Pu analysis. In RIMS, a slight detuning of the resonance laser extinguishes the Pu signal so that the 238U interference can be accurately quantified and subtracted.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d95be0474c701924164cc62197a3c9b3
https://doi.org/10.1039/d3ja00096f
https://doi.org/10.1039/d3ja00096f
Autor:
Michael R. Savina, Reto Trappitsch
Publikováno v:
Photoionization and Photo-Induced Processes in Mass Spectrometry
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d507df5a74999794e7f659baedc6e44d
https://doi.org/10.1002/9783527682201.ch6
https://doi.org/10.1002/9783527682201.ch6
Publikováno v:
Analytical chemistry. 93(27)
Solid samples of spent nuclear fuel were analyzed for actinide isotopic composition by resonance ionization mass spectrometry. Isotopes of U, Pu, and Am were simultaneously quantified using a new method that removes and/or resolves the isobaric inter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4e196dd4c6c3843288f1a67199144ba
https://pubmed.ncbi.nlm.nih.gov/34185994
https://pubmed.ncbi.nlm.nih.gov/34185994
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 149:214-221
Atoms sputtered from solids by energetic ion irradiation often partition across electronically excited states. We developed a resonance ionization method to measure the population of the uranium 5K5 state (620 cm−1) relative to the 6L6 ground state
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a79edde400282a7afba4bbae19b1b3a
https://doi.org/10.1016/j.sab.2018.08.003
https://doi.org/10.1016/j.sab.2018.08.003
Autor:
Detlef Rost, Andrew M. Davis, Michael R. Savina, Roberto Gallino, Frank Gyngard, Sara Bisterzo, Thomas Stephan, Sergio Cristallo, Nicolas Dauphas, Michael J. Pellin, Reto Trappitsch
Publikováno v:
Geochimica et Cosmochimica Acta. 241:272-280
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9048cbd7fc6f762850d3eb9e8ed528fe
https://doi.org/10.1016/j.gca.2018.08.035
https://doi.org/10.1016/j.gca.2018.08.035
Autor:
Reto Trappitsch, Peter Hoppe, Manavi Jadhav, Nicolas Dauphas, Christopher H. Kelly, Frank Gyngard, Detlef Rost, Thomas Stephan, Michael J. Pellin, Andrew M. Davis, Michael R. Savina
Publikováno v:
Geochimica et Cosmochimica Acta. 221:109-126
We used CHILI, the Chicago Instrument for Laser Ionization, a new resonance ionization mass spectrometer developed for isotopic analysis of small samples, to analyze strontium, zirconium, and barium isotopes in 22 presolar silicon carbide grains. Twe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91acf38ba4755c768253f596ec8243e5
https://doi.org/10.1016/j.gca.2017.05.001
https://doi.org/10.1016/j.gca.2017.05.001
Publikováno v:
Journal of Analytical Atomic Spectrometry. 33:1962-1969
The isotopic composition of titanium in meteoritic phases can be used to decipher processes such as stellar nucleosynthesis and galactic chemical evolution. In order to facilitate analyses of trace amounts of titanium in atom-limited samples, we esta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3858d058e84072ee666f719e0a38ed3
https://doi.org/10.1039/c8ja00269j
https://doi.org/10.1039/c8ja00269j
Autor:
Thomas Stephan, Reto Trappitsch, Roberto Gallino, Frank Gyngard, Andrew M. Davis, Sergio Cristallo, Detlef Rost, Michael R. Savina, Michael J. Pellin, Sara Bisterzo, Nicolas Dauphas
Publikováno v:
Geochimica et Cosmochimica Acta. 221:87-108
Aside from recording stellar nucleosynthesis, a few elements in presolar grains can also provide insights into the galactic chemical evolution (GCE) of nuclides. We have studied the carbon, silicon, iron, and nickel isotopic compositions of presolar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6734ccd906f524f8554c847fe3bd08e0
https://doi.org/10.1016/j.gca.2017.05.031
https://doi.org/10.1016/j.gca.2017.05.031
Autor:
Michael J. Pellin, Thomas Stephan, Detlef Rost, Reika Yokochi, Michael R. Savina, Reto Trappitsch, Andrew M. Davis, Nan Liu
Publikováno v:
International Journal of Mass Spectrometry. 407:1-15
We describe CHILI, the Chicago Instrument for Laser Ionization, a new resonance ionization mass spectrometer developed for isotopic analysis at high spatial resolution and high sensitivity of small samples like contemporary interstellar dust grains r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::524e57d0c15775a8fd7b9f5055b3686e
https://doi.org/10.1016/j.ijms.2016.06.001
https://doi.org/10.1016/j.ijms.2016.06.001