INDRA collaboration

This manuscript has been prepared with the aim of obtaining the degree of “Habilitation à Diriger des Recherches” (Authorization to Supervise Research) or “HDR”. The HDR sanctions recognition of a candidate’s high scientific level, the original nature of their approach in a field of science,
their ability to master a research strategy in a sufficiently broad scientific or technological field and their ability to supervise young researchers.

As such, this manuscript is divided into two parts. The first part is a detailed summary of my research activities since my Ph.D thesis, with many references to the various publications which resulted from these works. As a large proportion of my activity has also been dedicated to software development and maintenance for the INDRA and FAZIA collaborations, there is also a short chapter on this work, not documented elsewhere.

The second part concerns two new as-yet unpublished studies which I have conducted over the last two years. The first, currently being prepared for publication by the INDRA collaboration, concerns a new method for the quantitative determination of impact parameter distributions for any experimental selection of data in the Fermi energy range. The second, more recent, and more exploratory work, presents an entirely new method for carefully selecting the most isotropic events produced by collisions, allowing at last for a correct study of the dependence of nuclear
transparency with bombarding energy.