Trojan Horse Method experiments with radioactive ion beams

¹ INFN-LNS, Catania, Italy
² Università di Enna Kore, Enna, Italy
³ Dipartimento di Fisica e Astronomia, Università di Catania, Catania, Italy
⁴ RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
⁵ CNS, University of Tokyo, Wako Branch, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
⁶ CNS, University of Tokyo, Wako Branch, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
⁷ Department of Physics, Tohoku University, 6-6 Aoba, Miyagi Sendai, 980-8578, Japan
⁸ Department of Physics, Yamagata University, Yamagata 990-8560, Japan
⁹ Rare Isotope Science Project, IBS, Yuseong-daero, Yuseong-gu, Daejeon 305-811, Korea
¹⁰ Department of Physics, Kyushu University, Fukuoka 812-8581, Japan
¹¹ Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, IN2P3, F-91405 Orsay, country
¹² Institut de Physique Nucléaire, IN2P3, F-91405 Orsay, France
¹³ Institute for Nuclear Research (MTA-ATOMKI), Debrecen, Hungary
¹⁴ TUM, Garching, Germany
¹⁵ 30 MeV Cyclotron Center, Tran Hung Dao Hospital, Hoan Kiem District, Hanoi, Vietnam x
¹⁶ Texas A… M Univ, Inst Cyclotron, College Stn, TX 77843 USA
¹⁷ IFIN HH, Bucharest, Romania
¹⁸ Brookhaven Natl Lab, Upton, NY 11973 USA

^* e-mail: gulino@lns.infn.it
^** e-mail: cherubini@lns.infn.it

Published online: 29 June 2018

Abstract

The Trojan Horse Method (THM) is an indirect method that allows to get information about a two body reaction cross-section even at very low energy, avoiding the suppression effects due to the presence of the Coulomb barrier. The method requires a very accurate measurement of a three body reaction in order to reconstruct the whole kinematics and discriminate among different reaction mechanisms that can populate the same final state. These requirements hardly match with the typical low intensity and large divergence of radioactive ion beams (RIBs), and experimental improvements are mandatory for the applicability of the method. The first reaction induced by a radio activeion beam studied by applying the THM was the ¹⁸F(p,α)¹⁵O. Two experiments were performed in two different laboratories and using different experimental set-ups. The two experiments will be discussed and some results will be presented.