Lambda-line and solid-liquid coexistence curve in 4He.

[luisgml_2000]

Hello all,

I found on the NIST's website (http://webbook.nist.gov/cgi/fluid.cgi?ID=C7440597&Action=Page) the raw data of the saturated vapor-pressure curve of 4He. I need similar information for the lambda-line and the melting curve of 4He but I haven't found it on NIST's website.

Could someone please point me to the right database in NIST or otherwise? The reason of this request is that I need something more accurate than the phase diagrams usually found on Google.

Thanks a lot,

Luis

 

[eljose79]

Hello Luis,

Thank you for bringing this question to the forum. It's great to see fellow scientists utilizing the resources available to us.

I did some research and found that the NIST website does not currently have data for the lambda-line and melting curve of 4He. However, I found a database called PVT Properties of Helium-4 on the NIST Data Gateway (https://www.nist.gov/mml/csd/information-gateway/pvt-properties-helium-4) that may have the information you are looking for.

Additionally, I suggest checking out the Journal of Chemical and Engineering Data (https://pubs.acs.org/journal/jceaax) for more detailed and accurate data on the phase behavior of 4He.

I hope this helps and good luck with your research. Keep pushing the boundaries of science!