TRT_PAI_Process Package

Ionization of TRT gas via the Photon Absorption Ionization model.

Author

Originally implemented in age FORTRAN by Pavel Nevski. Adapted to C++ by T.Kittelmann/Mogens Dam.

Introduction

The main reference for this implementation is

• V.M.Grishin, V.K.Ermilova, and S.K.Kotelnikov, NIM A307 (1991) 273-278.

Other references to the PAI model are

• V.C.Ermilova, L.P.Kotenko, and G.I.Merzon, NIM145 (1977) 555-563.
• J.H.Cobb, W.W.M.Allison, and J.N.Bunch, NIM133 (1976) 315-323.
• W.W.M.Allison and J.H.Cobb, Ann.Rev.Nucl.Part.Sci (1980), 253-98.

Note

Internally this package uses the original units of the fortran version. The external world sees CLHEP units.

Class Overview

The TRT_PAI_Process package contains of following classes:

• TRT_PAI_Process: main class for the PAI model.
• TRT_PAI_element: description of chemical elements
• TRT_PAI_gasComponent: description of gas components (molecules)
• TRT_PAI_gasMixture: global description of gas mixture
• TRT_PAI_effectiveGas: calculation of all variables for gasMixture in order to perform PAI
• TRT_PAI_gasdata.h: tabulated values of photon absorption cross section