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Question Cerenkov + Scintillation (+ OpticalPhoton) 

Keywords: Cerenkov Scintillation OpticalPhoton
Forum: Processes Involving Optical Photons
Date: 15 Jul, 2002
From: Jacek M. Holeczek <holeczek@us.edu.pl>

Hi,
I am trying to describe the properties of my material so that it
includes the Cerenkov and Scintillation production (+ all OpticalPhoton
interactions).

Assume I have known (analytical) functions for the material :
	RINDEX(EnOp) = rndx(EnOp)
	ABSORPTION(EnOp) = absrp(EnOp)

I am interested in the following :
	Cerenkov production in range 2eV to 4eV +
	Scintillation production at 10eV (just one "line")
Is it possible to have it this way ?
I was thinking about something like this :
	// describe the Cerenkov in range 2eV to 4eV
	const G4int NUMENTRIES = 32;
	G4double PPCKOV[NUMENTRIES] = { 2.*eV, ..., 4.*eV };
	G4double RINDEX[NUMENTRIES] = { ... rndx(EnOp) ... };
	G4double ABSORPTION[NUMENTRIES] = { ... absrp(EnOp) ... };
	G4MaterialPropertiesTable *myMat = new G4MaterialPropertiesTable();
	myMat->AddProperty("RINDEX", PPCKOV, RINDEX, NUMENTRIES);
	myMat->AddProperty("ABSLENGTH",PPCKOV, ABSORPTION, NUMENTRIES);
	// describe the Scintillation at 10eV
	G4double PP = 10.*eV
	G4double SCINTILLATION = 1.0; // does this mean 100 percent ???
	myMat->AddProperty("SCINTILLATION", &PP, &SCINTILLATION, 1);
How can the Geant4 know what is the RINDEX and ABSORPTION at 10eV ?
If I "redefine" the RINDEX and ABSLENGTH properties just at the energy
of 10eV, they will be lost for the Cerenkov in range 2eV to 4eV.

Another, related question is : assume I am interested in the following :
	Cerenkov production in range 2eV to 4eV +
	Cerenkov production in range 9eV to 11eV +
	Scintillation production at 10eV (just one "line")
(note the "gap" in Cerenkov energies between 4eV and 9eV)
Is it possible to have it this way ?
How should I define all the "properties" in this case ?

Thanks in advance,
Best regards,
Jacek.

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1 Feedback: Re: Cerenkov + Scintillation (+ OpticalPhoton)   (Peter Gumplinger - 25 Jul, 2002)
(_ None: Re: Cerenkov + Scintillation (+ OpticalPhoton)   (Jacek M. Holeczek - 26 Jul, 2002)
(_ Feedback: Re: Cerenkov + Scintillation (+ OpticalPhoton)   (Peter Gumplinger - 26 Jul, 2002)
(_ None: How to disnable Cerenkov Effect in a specified material/volume   (Dvorak - 21 Jun, 2003)
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