plastic scintillators

It depends on the purpose. When it comes to the resolution between neutrons and gamma rays and the determination of particle energy, stilben is unsurpassed. When it comes to mechanical resistance, a plastic scintillator, eg EJ-299-34. If the criterion is detection volume, then a liquid scintillator, for example NE-213 (but it is sensitives to oxygen contact and is poisonous).

Recently synthetic diamond was successfully used in discriminating fast neutrons from gamma radiation. Please see references in the literature.

Best

Matthias

Note for NE-213 - it is cheap, but it needs to remove oxygen from it (eg by bubbling with argon) and has a considerable thermal expansion - it has to be encapsulated so as to create a space where the liquid can stretch out.

Note for stilbene - can not be produced more than about 50x50 mm and suffers from optical anisotropy, which is not a problem for detection (for spectroscopy yes).

Note for fast neutrons - these include neutrons with energy aproximatly ranging from 500 keV to 18 MeV.

Vaclav

Actually the choice depends on the volume of detector you require. What would be your volume?

BF3

أما بالنسبة للنيوترونات السريعة فإنه يفضل الكشف عنها باستخدام البروتونات المرتدة عند تشتت هذه النيوترونات على الهيدروجين . ولهذا الغرض تجهز البلورة في شكل خليط من حبيبات كبريتيد الخارصين ZnS والشمع لاحتوائه على نسبة عالية من الهيدروجين . وتعتبر هذه البلورة من أنسب البلورات للكشف عن النيوترونات السريعة .