Measuring big X-ray tube

This is extremely dangerous, don't try this nowhere else!!
Measuring with CD V-715 ionization chamber, and homemade geiger counter.
The suppy voltage was approx. 35-40kV with a flyback transformer and a ZVS driver, at 30V (the tube is rated 60kV, but I think it can handle 150kV). The radiation was about 0,5 - 1R/h (the CD V-715 was not calibrated)
2 pics:
http://kalazif3.googlepages.com/400mR.jpg/400mR-full;init:.jpg
http://kalazif3.googlepages.com/cdv715_1.jpg/cdv715_1-full;init:.jpg

Category:

Science & Technology

Tags:

• x-ray
• ray
• x-rays
• rays
• cdv
• 715
• cd
• v-715
• high
• voltage
• geiger
• counter
• ionization
• chamber
• gamma
• roentgen
• röntgen
• radioactive
• radioactivity
• active
• tube
• cső

[metalation87]

so was the power to the tube shut off when you were measuring it? cause if not, then that means that the tube ionized the enviroment? I dont understand x-rays that well, please forgive my lack of knowledge, its just that im in school to be a rad tech, and that freaks me out because in an x-ray suite when there are not x-rays being emitted, does that mean I am exposed to radiation like this constantly???

[omegalab]

@metalation87

No, it wasn't turned off. X-rays doesn't activate materials. Only neutron radiation can activate some materials.

[LordMagnus007]

So did your meter peak out at about 300 mR/hr? that's what it kinda looked like. I have the cdv-700-model6b and the cdv-717, both in excellent condition, the cdv700 has been moded with some more modern parts, and a switch for fast/slow meter readings. I have another cdv-700 that is getting overhauled real soon, and getting a scintillation probe reftrofitted to it.

[omegalab]

@LordMagnus007

This was a fast test with a simple flyback, thats why the radiation is low.

I want a CDV700, but US sellers dont ship overseas, because it contains an active calibration material.

[hbenders3356]

Would you be in danger of X-Ray production at 15kV?

[omegalab]

@hbenders3356

For X-rays you need at least 20kVDC, and deep vacuum.

[Membrane556]

X-rays are light and thus are subject to the inverse square law this means the power drops off very quickly with distance. So unless he is in an apartment complex he's probably not endangering anyone else.

[zker666]

Wow that's some scary stuff. I'm all into high voltage, I play with 100kv +, but radiation just freaks me out.

[cautionthisissparta]

for anything to show up on a 715 is amazing, given they were only supposed to be used for massive amounts of radiation

[lo9765]

do it at home :D

[budman1778]

LMFAO! Only in America can a video of a crazy ass guy with a big ass old X-Ray tube turn into a rant about gay rites and moon landings.God bless America I just wish those guys would have kept it up for a few more months. I would have canceled my subscriptions to comedy central and the science channel. By the way fun video and comments

[Mosfetman97]

roasted nuts?!

[HorizonDelta]

Nice vid !

[daenumen]

@daenumen ^^ sorry *child abuse cases*, 'straight' child abuse is far more likely to be publicised for the obvious set of reasons.

[daenumen]

@JonasClark well the comment about rights was a joke.

the comment is sad, that these people who suffer doubly; having been abused as a child, and in a way that is often contrary to their biological anatomy.

yes 2/3 of the child abusers are straight...and ~90% of the population is straight...

[JonasClark]

@daenumen I nonetheless find your "womens' rights oppress mens' rights not to have to clean/cook" comment amusing. Your ">6% of children abused by homosexuals" comment is sad. Statistically, most child abusers are straight...

[daenumen]

@JonasClark not 'attracted' to women?! sorry i dont understand what you mean by that remark. please explain.

be deprived of cooking because its a womans job?! who ever said cooking was a womans job?! so what if you know one woman who cant cook?! so what if your friend, if he can cook better than someone elses wife?!

This isnt a competition between the male and female genders, this is about the 'companionship' via 'natural roles' of 'father and mother'...

[JonasClark]

@daenumen I have no issues with women. I'm just not attracted to them. Besides... I LOVE to cook. I'd hate to be deprived of that pleasure simply because it's a woman's job. I have a friend whose mother is a horrible cook, and gets very angry if anyone tries to show her new recipes; her food is almost inedible. My friend loves to cook and is good at it, but even though he, too, likes his son's cooking and hates hers, he won't let my friend cook for them because "it's the wife's job".