@faraday1945 Oh your part of the same hostile group. No I do not want to be part of your group. I will however help the person with the Canberra multi channel analyzer. Tell him I have a manual for him with a pinout.
@faraday1945 The method isn't novel, it's inexpensive. I was asked if it could be used for personal dosimetry and I said I was not comfortable with that. Soil sampling yes if there are not other instruments. Why are you so hostile? Your comment was taken as an insult by everyone who read it including myself. We had a laugh at our meeting. I was only a second place winner in my seventh grade science fair. Write me and I will ship you one of my counters for schools. I give them out to schools.
Mr. Andrew Latham, the poster of this video, linked to it on the "Fusor" forum (before having his account there terminated for rules violations). Some members skeptical of the general approach, myself included, have tried it with BC-400 scintillation plastic, arriving at the conclusion that Latham's claimed approach to imaging the K-40 in a bottle of KCl is unworkable and this presentation probably disingenuous. -Carl Willis
@Thallium208 You didn't have to post my name Carl, it's in my e-mail which I give in the video.
Seems your whole group is very very hostile border line stalker. No Carl I will not be part of your group, however the offer to buy the Canberra multi channel analyzer still stands.
@landrew3232 About this stalker accusation, Andy: you posted a link to this YouTube page on our forum looking for publicity in Japan. Believe it or not, it's that simple. You were banned for not following rules there and for subsequently throwing a tantrum, and to the best of my knowledge have not been invited back. Why do I continue to bug you here about the nonsense in the video? First, because it is in fact nonsense, but a close second is the snotty arrogance with which you peddle it.
@Thallium208 Hi Carl, sorry I still do not want to be a member of your group no matter how many times you ask. I enjoyed helping one of your members with a multi channel analyzer which I am still willing to purchase. As anyone can see, I did not take YouTubes offer to place adds for money, I have not used my name as a claim to fame you suggest. As far as the physics goes, if you know the math you can see the gammas emitted produce thousands of photons in the Bicron 400 I used.Please do the math
@Thallium208 Hi Carl, I still do not want to be a member of your group no matter how many times you ask.
In fact the scintillator in the video is Bicron 400. You can do the math or the experiment. Gamma ray detection using ccds isn't new. Unworkable? I did it and there are the results. You can do the math or the experiment. The gammas from the beta decay produce thousands of photons in the sint. You seem so hostile, stalking me everywhere I go. No Carl I do not want to be in your group.
@landrew3232 My technical critique has nothing to do with the basic and accepted physics of scintillation detectors, and everything to do with the practical shortcomings of point-and-shoot cameras as light collectors in this extreme low-light application. That is the core innovation you claim to be representing here. I've done your experiment as you describe it; you know where to find the results. And the conclusion is that it doesn't work. Try it again carefully if you need convincing.
This comment has received too many negative votesshow
@Thallium208 Carl , please get the name right. My name is in my e-mail address at the top of the page. Oh I still do not want to be part of your group, please stop calling and writing. My son thinks you are a stalker. The scin. in the video is Bicron 400. Why the Mr.? Oh another sign of disrespect?
This comment has received too many negative votesshow
@Thallium208 Sadly you failed to build the detector. You used an Americium source which is a alpha emitter, you placed the scintillator in a shoe box , you put the camera outside the box with a pinhole. The only way your detector would work is if you were at a nuclear event. If you need help please feel free to write, I like the fact you tried.Students have had interesting results. Keep trying:) I didn't even polish the plastic for more efficiency. Send your photos in. Remember beta/gamma:)
@landrew3232 Am-241 is a high-yield gamma emitter, 60 keV...educate your arrogant derriere. And I used a hot source, 5 millicuries, good enough for easy radiography with image intensifier systems as my writeup shows, and far, far hotter than a KCl salt shaker. (Speaking of my experiment...I don't know what you've been reading about pinholes and shoeboxes, that's not my experiment). Every honest assessment of your idea shows it doesn't work AT ALL, and I continue to suspect you know that.
@Thallium208 The detector I created can not see low energy gammas. The video shows a Potassium 40
gamma with 1.64 mev energy. I and others were very surprised we could see even this low energy gamma with a commercial ccd camera. I tried the usual household sources and the Potassium 40 in the salt substitute had the highest energy and rate for gamma.Check this beauty out called Big BOSS! I am hoping next years funding includes this camera.://bigboss.lbl.gov/docs/BigBOSS_NOAO_public.pdf
@faraday1945 Hi, I am very sorry you didn't understand the video. This was meant as a tool to inspire people to create a very inexpensive dosimeter that can measure small amounts of radiation. I believe they are now using this technique in Fukushima for soil testing after seeing my video. When you finish your science fair please come by our lab for a tour. I hope this inspired you to work hard in school and one day you will find a career in physics.
@alansmithee95608 Ha! Yes, these days so many people are frightened and they don't have to be.
I felt so sorry for the people of Japan and still do. I have hundreds of people backing me in radiation safety. Film badge, LSM, Bicron, source training, ALARA AS Low AS Reasonably Achievable. Not knowing if the bag of groceries you just brought in for your children was contaminated from a nuclear incident miles away I can't imagine the fear. Seems so many are so hostile when radiation is discussed.
So, the plastic scintillator is plastic that has some other material incorporated into it that gives off light when hit with radiation. The foil and tape blocks ambient light during the exposure. I just learned that tonic water will fluoresce under ultraviolet light due to the quinine that is contains. Does anyone know if tonic water will fluoresce on exposure to the beta particles given off by potassium? I am assuming that this is the type of emission that is being picked up here.
Hi, Fluoresce is not the same as scintillate, sorry I wish it was that easy. It's not the beta that we see, it's the gamma ray with 1.46 mev that hits the scintillator. The potassium 40 has an unusual decay there are two decay channels one channel is a Beta minus (89% of time) producing a Calcium 40 isotope and the other channel electron (11%) producing a stable state Argon 40 isotope. The physics is fun with potassium 40 having two channels of decay and 1.2 billion half life
Hi, and thank you for the insult. I have tried the Pyrex baking dish (the large one in the video) using 14 bananas as the source. I was able to see a signal with 10 exposures averaged for a 4.7 sigma event ( Very good). A single exposure 1.5 sigma signal (just above noise) signal. Get creative, I have a microwave turntable plate that is Boron Silicate that might see a better signal? How about your mother's lead glass vase/goblet or ? .I have broken Pyrex cookware to try different geometry.
Hi again, I have been thinking about an experiment with 250,000 gallons of mineral oil undoped as scintillator. The efficiency is not what doped plastic is however I will give this a try tomorrow.
By the way there are many different organics you can use to custom tailor the wavelength (for photo tubes)and the efficiency you need.In large volumes it is also about the money unfortunately.
This is all too obviously faked.
MucusFelidae 3 days ago
i looked in my digital camera and seen 10 bananas, is that normal?
Robots4Sale 1 month ago
source (and price) of plastic scintillator?
AKAtheA 7 months ago
The old civil defence don't cost as much as the camera alone!
simpsonfuturama1 9 months ago
@faraday1945 Oh your part of the same hostile group. No I do not want to be part of your group. I will however help the person with the Canberra multi channel analyzer. Tell him I have a manual for him with a pinout.
landrew3232 10 months ago
@faraday1945 The method isn't novel, it's inexpensive. I was asked if it could be used for personal dosimetry and I said I was not comfortable with that. Soil sampling yes if there are not other instruments. Why are you so hostile? Your comment was taken as an insult by everyone who read it including myself. We had a laugh at our meeting. I was only a second place winner in my seventh grade science fair. Write me and I will ship you one of my counters for schools. I give them out to schools.
landrew3232 10 months ago
Mr. Andrew Latham, the poster of this video, linked to it on the "Fusor" forum (before having his account there terminated for rules violations). Some members skeptical of the general approach, myself included, have tried it with BC-400 scintillation plastic, arriving at the conclusion that Latham's claimed approach to imaging the K-40 in a bottle of KCl is unworkable and this presentation probably disingenuous. -Carl Willis
Thallium208 10 months ago 7
@Thallium208 Correction, name is Andrew Lathrop. My error.
Thallium208 10 months ago
@Thallium208 You didn't have to post my name Carl, it's in my e-mail which I give in the video.
Seems your whole group is very very hostile border line stalker. No Carl I will not be part of your group, however the offer to buy the Canberra multi channel analyzer still stands.
landrew3232 10 months ago
@landrew3232 About this stalker accusation, Andy: you posted a link to this YouTube page on our forum looking for publicity in Japan. Believe it or not, it's that simple. You were banned for not following rules there and for subsequently throwing a tantrum, and to the best of my knowledge have not been invited back. Why do I continue to bug you here about the nonsense in the video? First, because it is in fact nonsense, but a close second is the snotty arrogance with which you peddle it.
Thallium208 10 months ago 5
@Thallium208 Hi Carl, sorry I still do not want to be a member of your group no matter how many times you ask. I enjoyed helping one of your members with a multi channel analyzer which I am still willing to purchase. As anyone can see, I did not take YouTubes offer to place adds for money, I have not used my name as a claim to fame you suggest. As far as the physics goes, if you know the math you can see the gammas emitted produce thousands of photons in the Bicron 400 I used.Please do the math
landrew3232 10 months ago
@Thallium208 Hi Carl, I still do not want to be a member of your group no matter how many times you ask.
In fact the scintillator in the video is Bicron 400. You can do the math or the experiment. Gamma ray detection using ccds isn't new. Unworkable? I did it and there are the results. You can do the math or the experiment. The gammas from the beta decay produce thousands of photons in the sint. You seem so hostile, stalking me everywhere I go. No Carl I do not want to be in your group.
landrew3232 10 months ago
@landrew3232 My technical critique has nothing to do with the basic and accepted physics of scintillation detectors, and everything to do with the practical shortcomings of point-and-shoot cameras as light collectors in this extreme low-light application. That is the core innovation you claim to be representing here. I've done your experiment as you describe it; you know where to find the results. And the conclusion is that it doesn't work. Try it again carefully if you need convincing.
Thallium208 10 months ago 7
This comment has received too many negative votes show
@Thallium208 Carl , please get the name right. My name is in my e-mail address at the top of the page. Oh I still do not want to be part of your group, please stop calling and writing. My son thinks you are a stalker. The scin. in the video is Bicron 400. Why the Mr.? Oh another sign of disrespect?
landrew3232 10 months ago
This comment has received too many negative votes show
@Thallium208 Sadly you failed to build the detector. You used an Americium source which is a alpha emitter, you placed the scintillator in a shoe box , you put the camera outside the box with a pinhole. The only way your detector would work is if you were at a nuclear event. If you need help please feel free to write, I like the fact you tried.Students have had interesting results. Keep trying:) I didn't even polish the plastic for more efficiency. Send your photos in. Remember beta/gamma:)
landrew3232 10 months ago
@landrew3232 Am-241 is a high-yield gamma emitter, 60 keV...educate your arrogant derriere. And I used a hot source, 5 millicuries, good enough for easy radiography with image intensifier systems as my writeup shows, and far, far hotter than a KCl salt shaker. (Speaking of my experiment...I don't know what you've been reading about pinholes and shoeboxes, that's not my experiment). Every honest assessment of your idea shows it doesn't work AT ALL, and I continue to suspect you know that.
Thallium208 10 months ago 5
@Thallium208 The detector I created can not see low energy gammas. The video shows a Potassium 40
gamma with 1.64 mev energy. I and others were very surprised we could see even this low energy gamma with a commercial ccd camera. I tried the usual household sources and the Potassium 40 in the salt substitute had the highest energy and rate for gamma.Check this beauty out called Big BOSS! I am hoping next years funding includes this camera.://bigboss.lbl.gov/docs/BigBOSS_NOAO_public.pdf
landrew3232 9 months ago
@faraday1945 Hi, I am very sorry you didn't understand the video. This was meant as a tool to inspire people to create a very inexpensive dosimeter that can measure small amounts of radiation. I believe they are now using this technique in Fukushima for soil testing after seeing my video. When you finish your science fair please come by our lab for a tour. I hope this inspired you to work hard in school and one day you will find a career in physics.
landrew3232 10 months ago
always with the tinfoil
alansmithee95608 10 months ago
@alansmithee95608 Ha! Yes, these days so many people are frightened and they don't have to be.
I felt so sorry for the people of Japan and still do. I have hundreds of people backing me in radiation safety. Film badge, LSM, Bicron, source training, ALARA AS Low AS Reasonably Achievable. Not knowing if the bag of groceries you just brought in for your children was contaminated from a nuclear incident miles away I can't imagine the fear. Seems so many are so hostile when radiation is discussed.
landrew3232 10 months ago
So, the plastic scintillator is plastic that has some other material incorporated into it that gives off light when hit with radiation. The foil and tape blocks ambient light during the exposure. I just learned that tonic water will fluoresce under ultraviolet light due to the quinine that is contains. Does anyone know if tonic water will fluoresce on exposure to the beta particles given off by potassium? I am assuming that this is the type of emission that is being picked up here.
DanYHKim 10 months ago
Hi, Fluoresce is not the same as scintillate, sorry I wish it was that easy. It's not the beta that we see, it's the gamma ray with 1.46 mev that hits the scintillator. The potassium 40 has an unusual decay there are two decay channels one channel is a Beta minus (89% of time) producing a Calcium 40 isotope and the other channel electron (11%) producing a stable state Argon 40 isotope. The physics is fun with potassium 40 having two channels of decay and 1.2 billion half life
landrew3232 10 months ago
Wikipedia/wiki/Banana_equivalent_dose
landrew3232 10 months ago
Comment removed
EFForg 10 months ago
Oh how easy and useful, since everyone has scintillators laying around the house. FAIL.
agnstdgrain 10 months ago
Hi, and thank you for the insult. I have tried the Pyrex baking dish (the large one in the video) using 14 bananas as the source. I was able to see a signal with 10 exposures averaged for a 4.7 sigma event ( Very good). A single exposure 1.5 sigma signal (just above noise) signal. Get creative, I have a microwave turntable plate that is Boron Silicate that might see a better signal? How about your mother's lead glass vase/goblet or ? .I have broken Pyrex cookware to try different geometry.
landrew3232 10 months ago
This is great!
ElecDashTronDotOrg 10 months ago
How about some suggestions for the plastic detector.
msimon6808 10 months ago 3
where do you get a scintillator?
pleiotropik 11 months ago
@pleiotropik I will have options for you shortly. Please feel free to write me Landrew3232@yahoo.com
landrew3232 10 months ago
Hi again, I have been thinking about an experiment with 250,000 gallons of mineral oil undoped as scintillator. The efficiency is not what doped plastic is however I will give this a try tomorrow.
By the way there are many different organics you can use to custom tailor the wavelength (for photo tubes)and the efficiency you need.In large volumes it is also about the money unfortunately.
.fnal.gov/pub/science/experiments/intensity/miniboone
landrew3232 10 months ago
Seria interesante que alguien lo subtitulara en varios idiomas.
embelek 11 months ago
cukmi.com/como-hacer-un-detector-casero-de-radiactividad-con-bananas-y-una-camara-de-fotos/
landrew3232 11 months ago
That is great, thanks. I want to research this more and give it a shot.
derekowens 11 months ago
Please let me know if I can help in any way
landrew3232 11 months ago