What I am really after is a true/false explanation of your own words
everything is true in the context of the topic been discussed
Leonid Surpin
This horse is so dead it is decayed
Yes it is. My last attempt to explain my position.
The statement that NIckel 60 is high energy isotope is the correct
statement, but it does not mean that Nickel 60 is radioactive. It
relaxes into it’s normal energy state by emitting gamma ray.
“Gamma” ray should be interpreted in a wide fashion, not only as a
type of emission coming out of nuclear reactor.
Email does not allow me to write out the equation of the reaction,
but if you can get hold of it, you would see that source of gamma
emission is Nickel 60 and not Cobalt 60.
Contextual equivalence between gamma rays and neutron radiation is a
shortcut of convenience to avoid “killing a horse” before it was
born. By providing definitions I though I made it clear.
Leonid Surpin
According to this, virtually any radiation being released from an atom, no matter what the particles, energy level, or whatever, would be called neutron radiation. A bit broad, don't you think? Most of the rest of the physics world would say neutron radiation consists of, guess what: actual free neutrons
That was exactly the intention to give as broad of a definition as
possible. And it also happened to be correct. The same applies to
gamma ray. Any electromagnetic emission can be classified as gamma
ray.
Let’s remember that definitions are narrowed down while discussing a
particular subset of facts and it is only an agreement among the
parties to assign to the subset a particular definition. Nothing
more, nothing less.
For instance: man goes on vacation and packs a nail clippers. He is
stopped by airline security for the reason that he has a nail
clippers. Man defines nail clippers as an item of personal grooming,
while airline security defines nail clippers as deadly weapon. They
both right because each uses definition with a particular purpose in
mind.
Leonid Surpin
Dear Ken,
Nickel 60 is a stable element and not an isotope.
Nickel 60 is one of five stable isotopes of the element nickel.
Isotopes are just different types of a given element, with different
mass numbers due to the fact that they have different numbers of
neutrons (but the same number of protons). The overall mass number
of an element is calculated using the different masses of the
isotopes and their percentage abundance.
The word isotope does not indicate radioactivity. Just splitting
hairs but nickel 60 is indeed one of nickel’s isotopes.
Helen
UK
http://www.hillsgems.co.uk
http://www.helensgems.etsy.com
Just splitting hairs but nickel 60 is indeed one of nickel's isotopes
You are right Helen. It has been 30 plus years since I have work
with this stuff and some of the hair splitting requires 10 plus power
magnifiers.
Cheers,
Ken Moore
I have 10,000+ cts of cut kunzite, I had them treated in cobalt 60, they all turned green, (very pretty) however they fade in any light. Can I get there pink color back any way?
It looks like everyone got sidetracked in Nuclear Engineering theory
and forgot to answer your question.
Colorless Kunzite irradiated with Cobalt 60 Gamma Ray irradiation
turn avery beautiful Green color. Some even rival Neon Green Pariba
Tourmaline. Unfortunately the color fades very quickly in sunlight.
You can turn them pink again by heating them in a relatively low
temperature oven. A well controlled kitchen oven or even a toaster
oven will work.
I watched a friend experiment with his green kunzite in his kitchen
oven. He had a very precisely controlled kitchen oven and he raised
the temperature in 50 degree Fahrenheit steps.
By the time he reached 550 degrees Fahrenheit (288 degrees Celsius)
all of the Kunzites had turned from Green to Pink. This pink color
is stableand will remain - as long as the Kunzite are not heated
further to a higher temperature as with a torch or a steamer or
exposed for prolonged periods to direct sunlight - like in a jewelry
store window.
You must be extremely careful with heating Kunzite. Another friend
put his beautifully faceted Pink Kunzites in his Kiln and wanted to
“tweak” the pink just a little bit. He got a telephone call and
forgot about the stones in the kiln. When I arrived, he had a large
parcel of completely colorless kunzite - but very well faceted.
The stones eventually got irradiated in a Cobalt 60 Gamma Ray
irradiation facility in the USA and turned the most incredible neon
green. Unfortunately the beautiful green color only lasts a very
short time in sunlight. After they were heated in the above process -
they turned a very nice Pink again.
Best regards,
Robert P. Lowe Jr.
Lowe Associates - Brasil
Gemstones, Rough, Specimens
You can turn them pink again by heating them in a relatively low temperature oven. A well controlled kitchen oven or even a toaster oven will work.
Mmm, yummy kunzite. I LOVE kunzite and have been looking for a
lovely piece of clean dark lilac/pink kunzite for a while. I will
continue on my hunt until the right piece turns up at the right
price, but I’m now at least educated as to the stability or otherwise
of that lovely colour once I do find the right stone. Thanks to all
you knowledgeable kunzite peeps.
Helen
UK