Absorption spectrum of water ice in the infrared - anybody happen to know off t

ElectricAye

Greetings,

I would like to know the absorption spectrum of water ice in approximately the near infrared, from about 800 nm to 1200 nm. I'm trying to figure out how much penetration can take place in ice for those wavelengths and at what depths. I know it's a long shot but I was hoping somebody on the forum might have a handbook of IR transmission data on hand.

many thanks,
Mark

Phil Pilgrim (PhiPi)

Here's a paper that might help: arxiv.org/pdf/0801.2805 (pdf). It looks like there's a difference between amorphous and crystaline ice. Scattering by microscopic air pockets will also add some variability. Good luck!

-Phil

erco

Phil: Is there anything you DON'T know? WOW! I am humbled, you are a whiz of all things technical.

BTW,·what is the airspeed velocity of an unladen European swallow?

http://www.style.org/unladenswallow

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·"If you build it, they will come."

ElectricAye

Phil Pilgrim (PhiPi) said...
Here's a paper that might help: arxiv.org/pdf/0801.2805 (pdf). It looks like there's a difference between amorphous and crystaline ice. Scattering by microscopic air pockets will also add some variability. Good luck!

-Phil

Wow!.... Man, I am totally impressed you could find that so quickly. Too bad there's not an emoticon for jaw dropping :jaw dropping: :eyes popping:

It confirms my suspicions that one of the reasons I can't find the exact data I'm looking for happens to do with how whacky the results get depending on how the crystals are formed, their freezing rate, deposition conditions, etc. The temperature dependence alone is enough to freak me out.

And you know, in itself, the topic of this paper is pretty interesting! "Now class, watch as I transform cubic ice into amorphous ice by the simple addition of 1 billion years worth of high energy protons - zzzzzZap - Hey, where'd everybody go? And why am I standing out in the middle of a howling desert at the bottom of a glowing crater full of ashes and cockroaches?"


thanks, Phil

ElectricAye

So I found this book answered a lot of my questions. It's got a great plot, the characters are true to life, and at $167.00, it's a steal !

www.amazon.com/Absorption-Absorbents-Atmospheric-Oceanographic-Sciences/dp/0387307532/ref=sr_1_1?ie=UTF8&s=books&qid=1258230397&sr=1-1

VIRAND

I wonder if NASA figured all that out when they were analyzing the splash of the moon missile.
If so, it may be public domain information.