Jon T. Hougen

Jon T. Hougen

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Jon T. Hougen passed away last January 28, 2018. A former senior researcher at NIST and Editor of Journal of Molecular Spectroscopy, he was one of the best known international figures in the field of high-resolution spectroscopy and a permanent presence in international conferences worldwide. He will be remembered by his multiple contributions, including the treatment of large-amplitude motions and the development of permutation-inversion group theory. Two volumes of Journal of Molecular Spectroscopy were dedicated to him in 2017, on the ocassion of his 80th anniversary. Despite his official retirement in 2009 he never stopped contributing with new science.

Jon Hougen in a characteristic pose in one of his last Conferences last September 4, 2018 at the 25th HighResolution Molecular Spectroscopy meeting in Bilbao, Spain (Per Jensen appears at his right).