Abstract: System and method for extremity dosimetry, that emables the maintenance of a chain of custody from dosimeter issuance to dosimeter read and further through multiple reuses of the dosimeter, are uniquely characterized by a reusable extremity dosimeter comprising a solid thermoluminescent (TL) body affixed as by bonding to a non-luminescent substrate that has integrally associated therewith indicia embodying a machine readable identification code. A preferred holder for the extremity dosimeter comprises a generally flat and flexible pouch that may be disposable, the dosimeter pouch including at least one pocket for containing the extremity dosimeter. Provision is made for attaching the dosimeter pouch to the body of a user at a specified extremity location such as a finger, wrist, toe, ankle, elbow, knee, forehead, etc. Also disclosed is a carrier for enabling the reading of the extremity dosimeters in TLD readers designed to read TLD cards containing multiple TL elements.

Abstract: A TLD dosimeter and method of making same, characterized by assembling a solid body of TL material on a non-luminescent substrate with a non-luminescent liquid adhesive interposed between juxtaposed parallel surfaces of the TL body and substrate, and heating the assembly to cure the liquid adhesive thereby to bond the TL body to the substrate. The liquid adhesive is a polyimide. For bonding the solid body to a film substrate such as an aromatic polyimide film, the TL body and film substrate are pressed together during heating and the heating step preferably involves baking the assembly at a high temperature.

Abstract: Apparatus and method for controlled growth of large single crystals in plate/slab form from a melt, characterized by a crucible having a narrow thickness dimension that is small enough to permit adequate control over the growth interface across the full width of the crucible and a scalable larger width dimension permitting the growth of crystals having a width many times the thickness of the grown crystal. The apparatus and method are further characterized by side heating members located in close proximity to the wider side walls and the hence the melt across the width of the crucible for obtaining and maintaining control over the growth interface. The apparatus and method are scalable for the growth of large single crystals such as 1 meter by 1 meter square crystals which heretofore were not obtainable by known apparatus and melt growth methods at least in the case of single crystals such as calcium fluoride.

Abstract: The method and system interpretation for determining dose equivalents of a multi-element thermoluminescent dosimeter in mixed photon-beta and photon-neutron fields is described. The four TL Elements are covered by nearly tissue equivalent filters including only one metal filter which is used to provide low energy photon discrimination. In a mixed field, deep and shallow dose equivalents and the identity of the field's components are derived from the dosimeter's response in pure fields.

Abstract: A scintillation detector capable of withstanding high shock and/or high temperatures, comprises a scintillation crystal, a casing for the crystal, and a shock absorbing boot interposed between the crystal and the casing. The boot is characterized by a plurality of radially outwardly directed protrusions for engaging the casing. The protrusions define therebetween unfilled spaces to provide room into which the boot may expand at high temperatures. The protrusions may be longitudinally or radially extending ribs and the ribs may be generally rectangular or triangular in cross section. A reflector surrounds the crystal and preferably is in the form of a thin porous sheet of polytetrafluoroethylene (PTFE) wrapped tightly around the crystal. The boot preferably has a substantially continuous cylindrical interior surface for engaging the thin porous PTFE sheet to avoid high pressure concentrations.