Assessment of 53Mn deposition on Earth via accelerator mass spectrometry

• Main Authors: Rodrigues, D., Negri, A.E., Balpardo, C., Arazi, A., Faestermann, T., Fernandez Niello, J.O., Fimiani, L., Gómez Guzmán, J.M., Hain, K., Korschinek, G., Ludwig, P., Marti, G.V.
• Format: Journal/Newspaper
• Language: unknown
• Subjects: Deposition; Extraterrestrial atmospheres; Particle accelerators; Upper atmosphere; Accelerator mass spectrometry; Interplanetary dust particles; Isotopic ratios; Production rates; Upper limits; Mass spectrometry; Antarctica; article; atmosphere; Antarc*; Antarctic
• Online Access: https://hdl.handle.net/20.500.12110/paper_09698043_v140_n_p342_Rodrigues

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 atoms cm−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. © 2018 Elsevier Ltd