Low-cost, light-weight high efficiency (H*10 capable) neutron spectrometric detector-dosimeter

A portable system for detecting neutrons comprising:

• a detector liquid in a first enclosure having walls and a venturi valve system such that the detector liquid can pass therethrough during detector operation, the enclosure affixed to a spinning mechanism for introducing negative pressure in the degassed detector liquid, wherein:
• the spinning mechanism is capable of inducing a tensioned negative pressure (Pneg) in the degassed detector liquid such that neutron detection can occur in the degassed detector liquid at negative pressure and configured to detect neutron-caused vapor pocket corresponding to neutron counts, wherein:
• detection for fast neutrons is based on [EV]=[RM]×[NE], where EV is a vector matrix of results of relative detection time for a range of Pneg values obtained experimentally by placing one or more neutron detectors equidistant from an unknown neutron source, NE is a neutron energy vector, RM is a response matrix representing a probability matrix for detecting a neutron at a plurality of Pneg values, and Pneg is the tensioned negative pressure;
• and
• wherein detection of epithermal neutrons is based on a single energy bin for which at least one doped CTMFD is used to derive a count rate which is related to a conversion factor to derive a dose rate.