Dear Tien,

The difference is that the two spectra were measured in different modes: transmission mode (ln(I0/It)) vs fluorescent mode (If/Io).

Regarding the spectrum provided by your colleague, the jump step is quite low. Also the measured intensity is much larger than that of the white line, which may have caused your Lytle detector overloaded.

Regards,

Bokky, D.C. Nguyen

Postdoc at IoP-AS, Taiwan

-----Original message-----
From:田能全<tien.nengchuan@gmail.com>
To:XAFS Analysis using Ifeffit<ifeffit@millenia.cars.aps.anl.gov>
Date: Thu, 01 Jul 2021 16:17:49
Subject: Re: [Ifeffit] Question about CsNO3 L3 edge

Hi Stefan,

Thanks for the response. I am confusing about the two plots. Could you please explain more about the difference?

<image.png>

https://www.researchgate.net/publication/231097049_Cs_L-edge_EXAFS_atomic_absorption_background/figures?lo=1

<image.png>

Kind regards,

N. C. Tien

Mangold, Stefan (IPS) <stefan.mangold@kit.edu> 於 2021年7月1日 週四 下午3:38寫道：

normal for every element,

the higher the energy, the larger is the penetration depth —

regards

Stefan Mangold

Am 01.07.2021 um 06:13 schrieb 田能全 <tien.nengchuan@gmail.com>:

Hi everyone,
My colleague sent me data of liquid CsNO3 sample measured using fluorescence model. According to the attached figure, I don't understand why mu(E) increased with increasing energy before and after the L3 edge. Does it make sense for cesium?  Thanks.

Nengchuan

<image.png>

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