PhD position in noble gas cosmochemistry: Pre-irradiation effects in Calcium-Aluminum-rich refractory inclusions

Project: There is a well-known time gap between CAI formation and parent body accretion. The main objective of this study it to quantify this time gap and to get some constraints on the physical conditions of CAI formations and storage. Doing so, we plan studying a variety of CAIs and search of excess cosmogenic noble gases. To correct for variable chemical composition, we will analyze the selected CAIs using micro- and/or nano-CT studies.

The project will start with some powdered CAI samples that have already been chemically analyzed. The micro- and/or nano-CT studies of the samples will provide the starting point to establish a relationship between CAI chemistry and CT-absorption features. The data will help correcting the cosmogenic noble gas data for variations in chemical composition.

Requirements: Applicants should hold a diploma or Master's degree in Physics or in a discipline relevant for noble gas mass spectrometry. The project requires profound analytical skills, like noble gas measurements using laser melting techniques and micro-CT studies of selected samples.

We offer: The Department for Space Science and Planetology at the University of Bern not only studies a wide range of cosmochemical problems but is also highly involved in the development of new and better instruments for the laboratory and for space missions. We offer a PhD position in a highly motivating atmosphere and in very well equipped laboratories. The position can be filled beginning 2021. The position is financed by the Swiss National Science Foundation.

Your application: Applicants should submit a curriculum vitae, a statement of research interests and the contact details of three persons we might ask for a reference by e-mail to

posted: 14 October 2020     Please mention EARTHWORKS when responding to this advertisement.