We performed a calculation of the energy loss dE/dx and the primary ionization density dN/dx for a charged heavy particle crossing a gas volume as a function of the particle beta. We start from the Maxwell equation and using the experimental values of the photo-absorption cross section, we take into account the different material properties. Our calculation of dE/dx is in excellent agreement with the Bethe-Bloch function and in the case of dN/dx we found a relativistic rise and a good agreement with the primary ionization experimental data we compare. We consider the possibility to use primary ionization measure to make the particle identification in the large tracking chambers. (C) 1999 Elsevier Science B.V. All rights reserved.
Santovetti, E., Cerrito, L. (1999). Primary ionization and energy loss calculation for helium, neon, argon and krypton. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, 435(3), 348-353 [10.1016/S0168-9002(99)00552-5].
Primary ionization and energy loss calculation for helium, neon, argon and krypton
SANTOVETTI, EMANUELE;CERRITO, LUCIO
1999-01-01
Abstract
We performed a calculation of the energy loss dE/dx and the primary ionization density dN/dx for a charged heavy particle crossing a gas volume as a function of the particle beta. We start from the Maxwell equation and using the experimental values of the photo-absorption cross section, we take into account the different material properties. Our calculation of dE/dx is in excellent agreement with the Bethe-Bloch function and in the case of dN/dx we found a relativistic rise and a good agreement with the primary ionization experimental data we compare. We consider the possibility to use primary ionization measure to make the particle identification in the large tracking chambers. (C) 1999 Elsevier Science B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
