Author/Authors :
Blank، نويسنده , , Murray B. and Hay، نويسنده , , L. and Huikari، نويسنده , , J. and LeBlanc، نويسنده , , S. and List، نويسنده , , S. and Pedroza، نويسنده , , J.-L. and Ascher، نويسنده , , P. and Audirac، نويسنده , , L. and Borcea، نويسنده , , C. and Canchel، نويسنده , , G. and Delalee، نويسنده , , F. and Demonchy، نويسنده , , C.E. and Dossat، نويسنده , , C. and Giovinazzo، نويسنده , , J. and Hellmuth، نويسنده , , P. J. Marchand and D. M. Chiarulli ، نويسنده , , C. and Matea، نويسنده , , I. and de Oliveira، نويسنده , , R. and Pibernat، نويسنده , , J. and Rebii، نويسنده , , A. and Serani، نويسنده , , L. and Thomas، نويسنده , , J.C.، نويسنده ,
Abstract :
Two-proton radioactivity was observed in 2002 in the decay of 45Fe. However, the experiments performed at that time did not allow the observation of the two protons directly. We present here a new setup based on the principle of a time-projection chamber that enabled us for the first time to identify directly the two protons. The new setup permits the observation and reconstruction in three dimensions of the traces of the protons and to determine thus their individual energies and their relative angle. We will discuss the setup in all necessary details and describe its performances in the context of two-proton radioactivity and β - delayed two-proton emission studies.
