Dear colleges as being involved in the development of neutrons detectors, I would be interested to test a surface barrier diode based on a boron crystal. I don't know if this kind of diode exists, neither if there are any particular difficulties to fabricate and to use it. I would greatly apreciate if you could send me information related to boron crystals (adresses of suppliers), and (or) to its applications. Thanks. Bruno Guerard _/ _/ _/ Bruno Guerard _/ _/ _/ email:guerard@ill.fr _/ _/ _/ Institut Laue-Langevin _/ _/ _/ B.P.156, 38042 Grenoble Cedex 9, France _/ _/_/_/_/ _/_/_/_/ tel:(33) 76.20.72.77 fax:(33)76.20.77.00