Navy

Semiconductor controlled switch radiation detector

Silicon controlled switch detection without the use of additional signal processing electronics

Sensors

Express License

Apply online to license this technology

Schematic diagram of the circuit used for ionizing radiation detection. The inset shows a micrograph of the SCS Phillips ECG-239 without the package cap.

Radiation detectors are vital to both scientific research and national security. In the former, these devices allow for precise monitoring of nuclear decay, cosmic radiation, or reactions in a particle accelerator. National security applications include detection of smuggled nuclear material or nuclear weapons.

Solid-state spark chambers, also known as semiconductor radiation detectors, are compact and easily used. Exposing a semiconductor to radiation produces free electrons and holes in the semiconductor. The existence of these electron-hole pairs indicates the presence of radiation, while the number of electron-hole pairs is proportionate to the energy of the radiation. Under the influence of an electric field, the electrons and holes travel to electrodes on either side of the semiconductor radiation detector, resulting in a measurable voltage pulse.

While efficient and easy to use, there is an ever-present need to increase the sensitivity of spark chambers to reach new detection thresholds. To that point, Navy scientists have made a combined semiconductor controlled circuit that includes a semiconductor controlled switch (SCS). This design yields a particle detector using a straightforward self-reset circuit with a commercial SCS that can be directly used as a particle counter.

Prenegotiated License Terms

Non-Exclusive
Partially Exclusive
Exclusive
License Execution Fee
$2,000
$3,000
$4,000
Royalty on Net Sales
2%
3%
4%
Minimum Annual Royalty
$1,000
$1,500
$2,500
Annual Patent Fee
$1,000
$1,500
$1,500
Sublicensing
No
Yes
Yes
Sublicensing Royalty on Net Sales
N/A
3%
4%
Sublicensing Royalty on Other Income
N/A
50%
50%

Do you have questions or need more information on a specific technology? Let's talk.

Contact Us