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Helium 3

image: Helium 3
product:

 

The basic principles of He3 inserts are indicated by the following three steps ...

  1. Warm the charcoal to release the adsorbed He3 gas which is then condensed by the 1 K POT. The liquid helium-3 collects in the He-3 pot, cooling the sample.
  2. Lowering the charcoal temperature to 4 K cryopumps the liquid He3 lowering its temperature . The isotope He3 is used instead of He4 because it does not exhibit film creep and a lower pressure can be reached (lower pressure means lower temperature). 
  3. Collect the He3 gas back into the sorb and reuse - over and over and over again.

 

He3 PRO: Sample in Vacuum

product:

SAMPLE IN VACUUM 3He REFRIGERATOR

Nanotechnology has created the demand. So, we set up our most popular Helium-3 insert on the CNC, to provide you with the lowest priced helium-3 system available anywhere.

The reason cryostat systems can be expensive is due to the fact that many are made in single (1) quantities.  Volume saves manufacturing costs (money)!

The ’Pro’ is a Production (volume) manufactured He-3 insert. This saves up to 40% or more when compared with similar systems and we pass the savings on to you! Why delay your experiments two months or more waiting to get more money?


Q & A ‘The Pro’

Q. What is the
difference between 
the Pro and the
standard He-3 insert? 

A. Nothing, they are the same
cryostat except the std has
extra accessories, can be fully
customized. and is tweaked
after testing.

Q. Can I customise
The PRO?

A. No, except for the length.

Q. What is the
base temperature?

A. The Pro system is
individually tested to make
sure that it reaches a base
temperature less than 300 mK.

 

 

 

 

Helium-3 Insert: Sample in Vacuum

product:

He3-SV insert is the standard for sample in vacuum and easily top loads into storage or research dewars and superconducting magnet systems.

Helium-3 Insert with He4 Reservoir

product:

The model ‘He3-SV4’ has a liquid helium reservoir built-in. This reservoir supplies the LHe-4 for the POT and for condensing He-3 gas. Ideal for applications where there is no access to the main LHe bath.

A liquid helium-4 reservoir is built-in! This insert has the standard He-3 pot, 1 K POT, and charcoal sorb and a He-4 reservoir that is filled externally using a vacuum insulated liquid helium transfer line.

A fill adapter automatically separates warm He-4 gas to allow refilling at any time without moving the transfer line position. This allows the transfer line to conveniently remain in place switched on or off as needed. (Note: If a transfer line is needed, ask about our LHe transfer lines with in-line flow valve.) The He-3 gas storage is also built-in - no gas handling needed.

Helium-3 Insert Top Loading in Vapor/Liquid

product:

The ‘TL’ is designed for fast sample exchange, the sample can be removed and inserted directly into the He-3 while operating ‘cold’.

  • Easy to Use
  • Easy and Fast Sample Exchange
  • Fast Cooldown (when needed)

Helium-3 Insert Top Loading for VTI

product:

The model ‘He3-VTI’ fits into standard dynamic flow Variable Temperature Inserts (VTI). The 3He refrigerator Top Loads into the sample tube of the VTI. Top Loads just like the standard sample stick.

The 3He insert is cooled by the LHe4 flow in the sample tube. Pumping on the sample tube provides the low temperature needed to condense the helium 3.

After doing its ‘job’ condensing the 3He, the VTI flow cools the charcoal cryopump providing high pumping speeds and temperatures below 300 mK.

The standard ‘grease seal’ provides fast sample access.

He-3 gas storage is built-in - no gas handling needed.

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