Fusor Forums

I have two fresh bubble dosimeters on order for absolute certainty. I believe several factors are driving these higher numbers (some recent runs are significantly higher than previously reported). - 75kV @ 12mA max - I've performed comparative runs at varying axial magnetic field strength (0 - 500 g...

The strategy was to use both calibrated detectors to provide greater confidence in the result. For example, the detector at 160cm has been well characterized, shielded from electronic interference, and precisely instrumented.

The is Ludlum sphere has a surface area of 1195 cm^2 and cross section of 299 cm^2 Maybe I'm missing something, but the Ludlum is calibrated to show uSv/h with a inverse RPG curve (that's pretty accurate at 2.45MeV) so the detector area is already considered in the measurement. Isn't the calibrated ...

A second detector was used (@160 cm), it read 7.8M n/sec based on it's previous calibration. The detector @40cm wasn't monitored because it's un-calibrated. The bubble detector I have is now expired. The bubble detector was used previously from runs between February and April (http://www.fusor.net/b...

I have three neutron detection systems: 1. A BF3 tube / LDPE moderator placed 40 cm from the cathode 2. A BF3 tube / LDPE moderator placed 160 cm from the cathode - calibrated with 54 bub/mrem dosimeter (Feb - April) 3. Ludlum 12-4-7 (x10 scale, slow 22 sec) placed 50.8cm from the cathode - calibrat...

This may be the highest Q for an amateur device.

Thank you, Richard, for the kind words. I've been fortunate to have studied power electronics and physics which gives a solid foundation to build, modify, and repair NIMs, power supplies, and controllers. I performed all the mechanical design but used a local machinist who is a friend and was willin...

Greenwich Mean Time is 7 hours ahead of Los Angeles, CA

Just a reminder:

My YouTube channel will have a live tour of my lab starting Sunday, May 26th at 12 noon PDT. Please join and ask questions!

https://www.youtube.com/channel/UCu4DHf ... tY8hvGP-EQ