Hello.
I would like to find out a dispersion relation of a hydrogen gas at 0 Celsius. Room temperature is even okay. I'd tried to find this on the internet, however, it appeared that many papers are for a liquid hydrogen. There are few papers for a gaseous hydrogen but measurements in these papers are for very high pressure at a single wavelength. I found a good website "http://refractiveindex.info/?shelf=main&book=H2&page=Leonard" but I hardly believe the data from the site since their reference looks actually not for hydrogen gas.
Could you give me some help to find this data?
http://refractiveindex.info/?shelf=main&book=H2&page=Leonard
Hydrogen boils at −252.87 °C (20.28 K;) and melts at −259.14 °C (14.01 K). So I can understand why references to low temperatures (0 K) would have values for liquid H2. Besides how could you reach 0K anyway? Do you mean 0 C? The data from Leonard looks fine to me - you'd expect the RI for H2 to be very close to 1.0000... (vacuum) but less than air. You also can input the wavelength on the website you quote.
Oh...I'm sorry and you are right. I'm talking about 0 celius, not 0 Kelvin. I corrected my question. Thank you to mention this!
Am...is there any word 'hydrogen" in the reference paper of the website? When I searched the word "hydrogen", my pdf reader could not fine it although the paper mentions other gas so I thought It is not for the hydrogen gas.
Not sure what you're looking at but the refractiveindex link info provides me with the information of RI of hydrogen over a wavelength from 0.23 - 0.67 um (or 230 to 670 nm approx.). I see H2 mentioned a couple of times and also a link to the original paper (Leonard) that could be consulted.
Hello.
When you look at the reference paper (http://www.sciencedirect.com/science/article/pii/S0092640X74800288) to the website (http://refractiveindex.info/?shelf=main&book=H2&page=Leonard), you will find it the paper is actually for inert gases such as the Helium, Neon, Argon, Krypton and Xenon, not the Hydrogen. Actually, there are no words of "Hydrogen", "H2" in the paper. That's why I think that the website for the Hydrogen gas refractive index is not trustable due to the lack of proper referencing.
Please tell me if there is something I missed.
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