Non-resonant electron spin resonant probe and associated hardware

An operational physical dosimetry system deployable as a retrospective public health counter measure comprising:

• (a) individual personal surrogate devices for humans and service animals, or other objects to be protected, of identification card (or the like) form factor carried on persons, or such objects routinely or close in proximity i.e. purse, lanyard and easily accessed by a radiation status instrument,
• (b) a radiation variable material with immediate and stable preservation of a radiation exposure effect incorporated into or on said device wherein the radiation variable material responsive to incident radiation exposure in one or more bands of the electromagnetic spectrum undergoes a shift in characteristics as a result of an initial of such exposure and retains such shift after the event,
• (c) a radiation status instrument detecting predictable electron spin changes as a result of ionizing radiation specifically and optimally gamma radiation, and
• (d) means for enabling a read-out of said radiation variable material by the detector instrument and transfer to a local or distant recorder or display,
• (e) wherein the instrument is an ESR detector instrument with permanent magnet poles and configured with a transmission line microwave probe for extraction and detection operation and comprising coils to sweep and modulate magnetic fields to establish and record a valid resonance peak, with accuracy and speed enhanced by incorporation of perforations or fissures into the transmission line conducting surfaces to improve magnetic field modulation at higher frequencies thereby allowing faster scans and the use of rapid scanning detection artifacts, both increasing speed and accuracy of measurements,
• the combination enabling low cost, effective widespread distribution in large populations required for rapid and widespread present or retrospective detection of radiation exposure and allowing maintenance of structural integrity by not requiring destruction of the personal surrogate device which can have continued intended use and thereby allow multiple cumulative exposure measurements.