Problem 1607

Summary:	Incorrect data for Bromine
Product:	Geant4	Reporter:	Tom Roberts <tjrob>
Component:	materials	Assignee:	Vladimir.Ivantchenko
Status:	RESOLVED FIXED
Severity:	normal
Priority:	P5
Version:	10.0
Hardware:	All
OS:	All

Description Tom Roberts 2014-04-14 03:50:38 CEST

In G4NistMaterialBuilder::NistSimpleMaterials(), at STP Bromine is claimed to be a gas with a density 7.07210e-3g/cm^3.

In fact, at STP Bromine is a liquid, with a density ~ 3.1028g/cm^3. It does boil easily, and has a large vapor pressure at room temperature, but its boiling point is 58C.

http://en.wikipedia.org/wiki/Bromine

Comment 1 Vladimir.Ivantchenko 2014-05-06 09:30:12 CEST

Hello,
Thank you for pointing to the problem. Likely NIST data were for vapor Br. We have added a new material in the Geant4 material list: "G4_lBr". It is done in the same style as we do for other cases when there are both gas and liquid states.

The fix will be available with the new public version of Geant4 in June.

VI