This is an old revision of the document!
http://www.fusor.eu/monitors.html#neutron_detector
- Has very good information
BF3?
- Page claims He-3
From eBay listing:
Russian Slow Neutron Corona Counter SNM-32 Operating Voltage - 1500V - 3000V Strating Voltage - 600V - 700V Slop of plateau, % per 100 V - ≤ 1 Neutron sencitivity, pulses per neutron/ cm2 - 0.8 Plateau Length - 1500 V Natural counter background, pulses/sec - ≤ 1 Body Diameter - 18 mm Body Length - 313 mm
Same thing as CHM32? Maybe the datasheet
- “Sometimes references are made to this detector as the CHM-32 detector, which is identical to SNM-32, but written in Cyrillic script”
From that page:
1. наклон плато счетной характеристики % на I в
Plateau (voltage) slope count(ing) characteristics percent in I (current?) B (voltage?) (in maximum column) 0.01
2. чувствительность счетчика к нейтронам по отношению к контрольному образцы, относит .ед.
sensitivity of the counter to neutrons with respect to the control sample refers (reference) . units. (minimum column) 0.8
3. Напряжение зажигания коронного разряда, в
Corona discharge voltage (V) (min-max) 600-700
4. средний ток коронного разряда, мкА
Average Corona Discharge Current, MicroAmps (max column) looks like 28 (23?)
5. собственный фон, имп.с ^ -I
Own background (some unit of measure, which transliterates to imp.s to the negative I; S could be impulse seconds in this case and maybe I is still current?) anyway … (max column) 0.017
6. радиационная помехоустойчивость, Р/ч
Radiation Noise Immunity (Rads/hour) (max column) 1500 uh…WOW!
7. выходная емкость, пф
Output Capacitance (pF = picofarad?) (max column) 6
Wonder what the output impedance is?
8. сопротивление изоляции, Ом
Insulation Resistance, Ohhs. (min column) 10 to the 10th
Some of the earlier blurbs:
- tчетчикиа = partially snm32 snm42
- etiketka = label
- tчетчикиа = partially snm32 snm42, prednaznachen = intented, dlia = for, registratsii = record, miedlenih = slow, nietronov = neutron, v = in, diapasonie = diapason, energii = energy klimaticheskoi ispolnenie = climatic execution, uksl = ?, tablitcha 1 = table 1
- razmer = size
- massa = weight
- ne bolee = no more
- osnovni = main, elektricheskie = electrical, I = and, radiometritcheskie = radiometrical, parametric = parameter
- tablitcha 2 = table 2
- nameniovanie = name, parametra = parameter
- edinitcha = one (number), izmernia = measure, forma = form/shape, ne menee = no less, ne bolee = no more
- protiajennost = distance, plato tchetnoy = plateau ?, karakteristiki = characteristics
- naimenovanie = name, parametra = parameter
- edinitsa = unit, izmerenia = measure
Sounds like its intended to have a moderator around it to slow down fast neutrons.