-40%
Helium-3, stable isotope of helium, rare helium, tralphium
$ 14.25
- Description
- Size Guide
Description
You receive one ampoule of helium-3, a very rare isotope of helium, with the purity 99,92% and dimensions 5x20 mm. The gas is under low pressure inside (10 torr) that let the ampoule be ionized and glow. We used Tesla coil to make it glow.Helium-3
(
3
He
,
tralphium
) is a light, stable
isotope
of
helium
with two
protons
and one
neutron
(the most common isotope,
helium-4
, having two protons and two neutrons in contrast). Other than
protium
(ordinary
hydrogen
), helium-3 is the only stable isotope of any
element
with more protons than neutrons. Helium-3 was discovered in 1939.
Helium-3 occurs as a
primordial nuclide
, escaping from
Earth's crust
into its
atmosphere
and into
outer space
over millions of years. Helium-3 is also thought to be a natural
nucleogenic
and
cosmogenic nuclide
, one produced when
lithium
is bombarded by natural neutrons, which can be released by
spontaneous fission
and by
nuclear reactions
with
cosmic rays
. Some of the helium-3 found in the terrestrial atmosphere is also a relic of atmospheric and underwater
nuclear weapons testing
.