TRiP98 dedx command
| GSI Biophysics | TRiP98 long write-up |

dEdx


dEdx item / import()   list      energy()       debug
            export()   delete    projectile()
            read       display   dx()
            write      inspect   eps(0.002)
            prefix()   alias()

Purpose

Handles input and output and interpolation of energy loss (dE/dx) tables.

Parameters

item
For the input options (read and import()) specifies a list of files, optionally wildcarded or including shell variables, to be read as dE/dx tables. Usually energy loss tables have the extension ".dedx"
For all other options: name of the material for which the dE/dx is to be processed. A "*" means all types, a list of types has to be put in double quotes.
import()
Not yet implemented.
export(fmt)
Exports a dE/dx table in some non-native format, at present only <fmt>="gd" is implemented to export for the gd plot program.
File name convention is:
<prefix><item>.dedx.gd
read
Read a dE/dx table specified by item.
write
Write the dE/dx table for material item
File name convention is:
<prefix><item>.dedx
prefix()
Prefix for output (write,export()) file names.
list
List the dE/dx table for material item
delete
Delete the dE/dx table for material item
display
Display the dE/dx table for material item. Not yet implemented.
inspect
Show some internal info about the dE/dx table for material item.
energy(energy)
When specified together with projectile() the dE/dx for the specified beam energy (MeV/u) will be computed from the dE/dx table for material item.
projectile(proj)
When specified together with energy() the dE/dx for the specified projectile will be computed from the dE/dx table for material item.
dx(deltax)
A thickness (g/cm**2). When specified together with projectile() and energy() the amount of energy (MeV/u) lost within <deltax> is computed.
eps(eps)
Accuracy parameter effective together with deltax(). The specified thickness is subdivided into layers so that the energy loss does not change more than <eps>.
alias()
Define an alias name for a material.
debug
Debug switch. Lots of output !

Remark

none

Examples

  1. dedx $TRIP98/DATA/19990304.dedx /read
    
    Reads the specified file in the directory "$TRIP98/DATA" and interpretes it as a dE/dx table.
  2. dedx H2O /proj(10B) energy(270) dx(1)
    
    For the projectile 10B of 270 MeV/u the dE/dx in H2O as well as the lost energy within 1 g/cm**2 is calculated.
  3. dedx film / alias(H2O)
    
    Defines a dummy energy loss table for material film which points to a "real" table H2O (which must exist).

| GSI Biophysics | TRiP98 long write-up |
Last updated: M.Kraemer@gsi.de, 7-Jun-2000