Re: Hydrogen Ionization & Spectral Energy Measurements

On Jun 30, 9:16 am, Benj <bjac...@xxxxxxxxxxx> wrote:
On Jun 27, 1:51 pm, maxwell <s...@xxxxxxx> wrote:

The value usually quoted for the ionization energy of the hydrogen
atom is 13.6 eV.
I would like to know (references if possible) to the most accurate
value of this quantity and the method used to determine this value,
plus the degree of accuracy obtained.  Please, no references to
CALCULATED values - simply the measurements.
I am also interested in similar data on the accuracy obtained in
measurements of the Balmer series of the hydrogen spectrum, especially
the n=3 to n=2 transition.
Thank you, in anticipation.

Hey Maxwell,
Doncha just love the arrogant way Mr. Egg and Freddie Fizzle just barf
crap off the top of their heads that is of no use and then pretend to
have answered your question?  Sure, why don't you just hit the NIST
site. It's got nothing you are looking for but we can pretend that we
gave you "all the answers". Feh.

Obviously, the best place to get started finding the first ionization
energy of hydrogen is the latest edition of the CRC handbook.  [get
out your wallet] My old ancient one shows 13.527 for example. Often it
has references to the original papers or you'll have to find them in
abstracts ect. Usually you have to try to find someone working in the
field (as you did here without success) to point to the latest one and
then use the references there to work backward to get the whole story
if you want it.

For spectroscopy it's a similar story. There is always someone
building a more accurate spectrometer so you've got to track down the
latest paper to get the supposedly best results. However there is no
guarantee that the latest paper has the most accurate numbers. That's
why NIST works so hard to get what they think is "best". Too bad they
don't seem to have any of the information you need.

So the bottom line is that unless you'll pay us to give you real
information, we'll "get you started" by giving you the link to
wikipedia! :-)

And shame on you for wanting actually experimental data!  Whatsamatta?
Don't you trust the theoretical calculations of modern physics? You
can't be much of a physicist! :-)

Thanks, for the help, Benj but my wallet is too empty to purchase
tomes like the CRC. Actually, as a theoretician I wanted access to
this data to compare with some of my own recent calculations. I have
always thought this was how physics was done.
.

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