September 29, 2023

PocketMagic

Where Technology meets magic

Tube: SBM-20M Small Geiger Muller

October 4, 2015

Pictures: Details: Compact Geiger Muller tube, the SBM-20M shows an excellent sensitivity for its small size. It was designed for hard beta and gamma radiation, and the particular tubes in my photos above are new generation tubes, manufactured in 2012. This is similar to the SBM-20-1, but smaller. Notes on sensitivity: The sensitivity of this tube is comparable with the SI-29BG and the SBT-9. Its small size makes it ideal…

Tube: SBT-9 End Window Geiger tube

July 29, 2015

Pictures: This is a rare Geiger Muller tube with a mica end window that allows it to detect alpha, beta and gamma radiation. It is a good substitute for the LND712 (both pictured above) where a multi-radiatin type detector is required, yet its low availability makes it problematic for any developing project (see uRADMonitor-D). This source indicates the SBT-9 was used in Russian spacecraft: “Vernov and his associates frequently used…

Tube: LND-712 End Window Alpha-Beta-Gamma Detector

July 5, 2015

Pictures: An excellent miniature mica window Geiger tube, suitable for detecting Alpha, Beta and Gamma radiation. As of 2015, it was selected for the uRADMonitor D series of radiation detectors. Details: Halogen quenched Geiger Muller tube, with a Mica end window making it suitable for detecting alpha beta and gamma radiation. Notes on sensitivity: The sensitivity of this miniature Geiger tube is amazing, placing it closeto the larger SBM-20. Most…

Tube: SBM-21 (СБМ-21) Miniature Geiger Muller

February 11, 2015

The SBM-21 Geiger tube offers relatively good sensitivity especially when compared to its ultra compact size.

Tube: SI-22G (CИ-22Г) Sensitive Geiger Muller

October 18, 2014

Pictures: Details: The SI-22G is a highly sensitive hard beta and gamma radiation detector tube, made in USSR during the 80’s for the Soviet Military Needs by the Soviet Institute for Scientific Radiation Technology Research. Notes on sensitivity: This is a highly sensitive tube, thanks to its cathode material and relatively large size. It is perfect for monitoring equipment and DIY dosimeters, superior to the SBM-20 in this sense. The…

Tube: SI-29BG (CИ-29БГ) Sensitive Small Geiger Muller

November 22, 2013

The SI-29BG comes with a good size / sensitivity ratio. These tubes are suitable for detecting beta and gamma radiation.

Tube: SBM-20 (СБМ-20) Geiger tube

October 19, 2013

Medium size sensitive Geiger tube for hard beta and gamma radiation.

Tube: VA-Z431 Geiger tube

June 26, 2013

VA-Z431 test tube shaped geiger muller tube for liquids.

uRADMonitor – Unusual Background Radiation Reports – Explained

January 31, 2013

This page has been created to report unusual activity (radiation, temperature, humidity, luminosity, barometric pressure), as recorded by the uRADMonitor, including all the debug data to support the results. I cannot guarantee the measurement precision, I merely present the data recorded by the instruments.

DIY/Homemade Radiation Geiger Dosimeter

December 1, 2012

A digital dosimeter design that can be used with multiple geiger tubes, constructed around the atmega8 microcontroller and a 2×16 LCD. Equipped with a radio Bluetooth module for remote operation.

uRADMonitor – Online Radiation monitoring station

October 21, 2012

I’ve developed the uRADMonitor as an Environmental Radiation Surveillance automated monitoring device. Data is gathered in real time, 24/7, and is exported via the Internet to a database online. The data is available in customizable charts for analysis.

Tube: G21-H Geiger Muller

September 16, 2012

A Geiger Muller tube for Gamma radiation.

Tube: SBT-10A (CБT-10A)

January 26, 2012

SBT-10A, a rare geiger muller tube for professional equipment.

Tube: VA-Z320

November 27, 2011

VA-Z320 mica window geiger muller tube

Tube: MCT-17 /SI-3B (си-3Б)

November 27, 2011

MCT-17 Mica Window Geiger Muller Tube

Tube: SBM-19 (СБМ-19 ) Sensitive Geiger Muller

November 27, 2011

SBM-19 Geiger Muller Tube

DIY/Homemade Geiger Muller Clicker V1

March 21, 2011

An article presenting a simple DIY Geiger Muller counter using the Russian tube SI-22G and a single transistor regulated inverter that puts out 400V, as required by the tube. A very basic detector assembled in 5 minutes. See an operation comparison to the Radex RD1706.