Dose unit Mrad(Si)

[akinokoe]

Main Question or Discussion Point

I am reading a paper on irradiation damage to semiconductor devices, the author mentioned a dose unit Mrad(Si). Can anyone tell me what it is? Thank you very much.

 

[MaGG]

Check this page out:

http://en.wikipedia.org/wiki/Rad_(unit)

 

[akinokoe]

Thank you very much. I am wondering what (Si) means. I am thinking it is system international but the S is in capital letter and i is in small letter.

 

[Bob S]

One rad is 100 ergs per gram deposited, in this case in a silicon solid state PIN diode detector (Si), which measures the number of electron-hole pairs. The conversion constant is about 3.7 eV of energy deposited per electron hole pair. This conversion constant may vary depending on the ionization density dE/dx (Bethe Bloch). See abstract

http://www.iop.org/EJ/abstract/0031-9155/14/1/004 .

Remember 1.6 x 10^-12 ergs = 1 eV.

Bob S

 

[akinokoe]

It makes perfect sense. I appreciate your help Bob.