Isotopic Compositions of Noble Gases and Nitrogen in the Ryugu Samples Returned by Hayabusa2
Okazaki R. * Marty B. Busemann H. Hashizume K. Gilmour J. et al. PDF LPSC 2022 abstract [#1348] “We report the first results of measurements for isotopic ratios and concentrations of noble gases and nitrogen…
Isotope effects at the origin of life: Fingerprints of the Strecker synthesis
L. Chimiak, J. Eiler, A. Sessions, C. Blumenfeld, M. Klatte, B.M. Stoltz Geochimica et Cosmochimica ActaAvailable online 20 January 2022 LINK “Strecker synthesis creates α–amino acids from prebiotically plausible substrates (cyanide, ammonia, and aldehydes) and…
Noble gases and nitrogen in CV3 chondrite Bukhara
Ramakant R. Mahajan, Shuhrat A. Ehgamberdiev, Sekhar Naik Planetary and Space ScienceIn Press, Journal Pre-proof, Available online 1 September 2021 LINK “Highlights • Noble gas and nitrogen isotopic were studied in CV3 chondrite Bukhara.• We…
Origin and timing of volatile delivery (N, H) to the angrite parent body: Constraints from in situ analyses of melt inclusions
C. Deligny, E. Füri, Etienne Deloule Geochimica et Cosmochimica ActaAvailable online 4 August 2021 LINK “Angrites are derived from the earliest generation of differentiated planetesimals that accreted sunward of Jupiter’s orbit, and are, thus, key…
Microscale H, C, and N Isotopic Distributions in Three Pristine CM Chondrites
Nittler L. R., Alexander C. M. O’D., Verdier-Paoletti M. J. 84th Annual Meeting of The Meteoritical Society 2021 (abstract # 6063) PDF In 3 CM rocks / H, C, and N isotopes / Huge diversity.
A Study of Chromium and Silicon Nitrides in Carbonaceous Chondrites
Leitner J., Vollmer C., Harries D., Kodolányi J., Ott U., et al. 52nd Lunar and Planetary Science Conference (2021), Abstract #1878 PDF “We identified Si3N4 and CrN in metal-sulfide grains in a set of carbonaceous…
Laser microprobe noble gases and nitrogen analysis of chondrules from the Dhajala chondrite
Ramakant R. Mahajan Meteoritics & Planetary ScienceVersion of Record online:08 September 2020 LINK “Noble gases and nitrogen are investigated in eight individual chondrules of the Dhajala H3.8 chondrite. The mean cosmic ray exposure age of…
Noble gases and nitrogen in metal from the ordinary chondrites Katol (L6), Itawa Bhopji (L3-5) and Portales Valley (H6)
Ramakant R. Mahajan Astrophysics and Space Science, Volume 365, Article number: 130 (2020) LINK “This is the first report of coupled noble gases (He, Ne, Ar, Kr and Xe) and nitrogen isotopic results in metal…
Exposure Ages, Noble Gases and Nitrogen in the Ordinary Chondrite Karimati (L5)
Ramakant R. Mahajan Earth, Moon, and Planets (2020) LINK “Noble gas and nitrogen isotopic compositions of Karimati ordinary (L5) chondrite are presented. Aliquots of the meteorite were studied in two noble gas mass spectrometers. Its…
An analytical formulation of isotope fractionation due to self-shielding
J.R. Lyons Geochimica et Cosmochimica Acta LINK “Isotope fractionation due to photochemical self-shielding is believed to be responsible for the enrichment of inner solar system planetary materials in the rare isotopes of carbon, nitrogen, and…
Noble gas, nitrogen composition and cosmic ray exposure history of two eucrites Vissannapeta, Piplia Kalan and one howardite Lohawat
Ramakant R. Mahajan, Amit Basu Sarbadhikari, M.S. Sisodia Planetary and Space Science In Press, Accepted Manuscript, Available online 7 December 2018 LINK “Highlights • Cosmic ray exposure ages of Piplia Kalan, Vissannapeta and Lohawat were…
Branching Ratios in Vacuum Ultraviolet Photodissociation of CO and N2: Implications for Oxygen and Nitrogen Isotopic Compositions of the Solar Nebula
Xiaoyu Shi, Qing-Zhu Yin, Hong Gao, Yih-Chung Chang, William M. Jackson, Roger C. Wiens, and Cheuk-Yiu Ng The Astrophysical Journal, Volume 850, Number 1 Published 2017 November 15 LINK “NASA’s Genesis mission reveals that the…
Predominantly Non-Solar Origin of Nitrogen in Lunar SoilsOPEN ACCESS
J. Mortimer, A.B. Verchovsky, M. Anand Geochimica et Cosmochimica Acta In Press, Accepted Manuscript, Available online 11 August 2016 LINK (OPEN ACCESS) “Simultaneous static-mode mass spectrometric measurements of nitrogen, carbon, helium, neon, and argon, extracted…
