摘要:
A portable dosimeter reader device includes an optically stimulated luminescence (OSL) reader for reading one or more OSL sensors of a dosimeter sled; a sled slider that is driven by a sled slider motor to position in turn each of the one or more OSL sensors of the dosimeter sled at a reading position where the OSL reader reads each respective OSL sensor; a display for displaying information relating to reading the one or more OSL sensors; and a battery compartment for one or more batteries, wherein the OSL reader includes an LED light source, wherein the battery compartment is electrically connected to the OSL reader, the sled slider motor and the display, and wherein the one or more batteries provide all of the power required for operating the OSL reader, the sled slider motor and the display.
摘要:
Described is a portable dosimeter reader device that is small in size and light in weight. The device comprises an optically stimulated luminescence (OSL) reader for reading one or more OSL sensors of a dosimeter and a dosimeter drawer slidably mounted in the device. The device further comprises an elevator carriage comprising a barrel with a barrel groove on an exterior side thereof, a loop retainer elevator including a tongue on an interior side thereof that travels in the barrel groove, a pinion gear mounted on the barrel, and a rack with rack teeth that engage pinion teeth of the pinion gear.
摘要:
The present invention provides methods and apparatuses for writing information to, reading information from, and erasing information on a luminescent data storage medium comprising Al2O3. The method includes writing and erasing of the information using photoionization via sequential two-photon absorption and non-destructive reading the information using fluorescent detection. The apparatuses for writing and reading the information incorporate confocal detection and spherical aberration correction for multilayer volumetric fluorescent data storage. The methods also allow multilevel recording and readout of information for increased storage capacity.
摘要翻译:本发明提供了用于向包括Al 2 O 3 N 3的发光数据存储介质写入信息,读取信息和从中擦除信息的方法和装置。 该方法包括通过使用荧光检测的顺序双光子吸收和非破坏性读取信息的光电离来写入和擦除信息。 用于写入和读取信息的装置包括用于多层体积荧光数据存储的共焦检测和球面像差校正。 这些方法还允许多级记录和读出信息以增加存储容量。
摘要:
This invention relates generally to luminescence techniques for imaging radiation fields and, more specifically, to the use of experimental and mathematical methods to distinguish between dynamic irradiation and static—or other abnormal radiation—exposure conditions for applications in personnel and environ mental radiation dosimetry, or related fields. In more particular, the instant invention provides a rapid and reliable method of detecting abnormal dosimeter exposure conditions over a wide dynamic range of radiation doses, while avoiding significant background interference and stimulation light leakage. Additionally, the preferred embodiment of the instant invention uses a pulsed and synchronized luminescence detection scheme. Further, this invention teaches a complete method and system for abnormal exposure detection—including the use of a luminescent thin powder layer, the use of a periodic radiation absorbing filter, the pulsed stimulation and synchronized luminescence detection scheme, and the method of analyzing and interpreting the recorded images. Finally, the system provides a means of mathematically characterizing an image as containing either a normal or abnormal exposure.
摘要:
The optically stimulated luminescence generated from a luminescent material having a relatively long lifetime of luminescence is measured by using short pulses of laser light stimulation and detecting luminescence only between pulses of light stimulation and after a certain delay following the stimulation pulse.
摘要:
Described is a dosimeter reader for reading a plurality of optically stimulated luminescence (OSL) sensors of a dosimeter sled and for reading an RFID tag on the dosimeter sled.