Assessment of 53Mn deposition on Earth via accelerator mass spectrometry

RODRIGUES, DARÍO; NEGRI, AGUSTÍN E.; BALPARDO, CHRISTIAN; ARAZI, ANDRÉS; FAESTERMANN, THOMAS; FERNANDEZ NIELLO, JORGE O.; FIMIANI, LETICIA; GÓMEZ GUZMÁN, JOSÉ MANUEL; HAIN, KARIN; KORSCHINEK, GUNTHER; LUDWIG, PETER; MARTI, GUILLERMO V.

APPLIED RADIATION AND ISOTOPES

PERGAMON-ELSEVIER SCIENCE LTD

Lugar: Amsterdam; Año: 2018 vol. 140 p. 342 - 346

0969-8043

The 53Mn flux onto Earth is a quantity relevant for different extraterrestrial and astrophysical questions. It is a proxy for related fluxes, such as supernova-produced material or interplanetary dust particles. In this work, we performed a first attempt to assess the 53Mn flux by measuring the 53Mn/10Be isotopic ratio in a 1400 L sample of molten Antarctic snow by AMS (Accelerator Mass Spectrometry). Using the 10Be production rate in the atmosphere, an upper limit of 5.5×103 atomscm−2 yr−1 was estimated for the deposition of extraterrestrial 53Mn. This result is compatible with one of the two discrepant values existing in the literature.