Question about CsNO3 L3 edge

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田能全

1 Jul 2021 1 Jul '21

4:13 a.m.

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: image.png]

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Mangold, Stefan (IPS)

1 Jul 1 Jul

7:38 a.m.

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 mailto: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 _______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.govmailto:Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit

田能全

8:17 a.m.

Hi Stefan, Thanks for the response. I am confusing about the two plots. Could you please explain more about the difference? [image: image.png] https://www.researchgate.net/publication/231097049_Cs_L-edge_EXAFS_atomic_ab... [image: image.png] Kind regards, N. C. Tien Mangold, Stefan (IPS) 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 :

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 _______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit

_______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit

Mangold, Stefan (IPS)

9:05 a.m.

the plot from researchgate is transmission data, your data is fluorescence; best regards Stefan Mangold Am 01.07.2021 um 10:17 schrieb 田能全 mailto:tien.nengchuan@gmail.com>: Hi Stefan, Thanks for the response. I am confusing about the two plots. Could you please explain more about the difference? https://www.researchgate.net/publication/231097049_Cs_L-edge_EXAFS_atomic_ab... Kind regards, N. C. Tien Mangold, Stefan (IPS) mailto: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 mailto: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 _______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.govmailto:Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit _______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.govmailto:Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit

Tien Neng-Chuan

10:58 a.m.

Thank you very much

...

Mangold, Stefan (IPS) 於 2021年7月1日下午5:05 寫道：

the plot from researchgate is transmission data, your data is fluorescence;

best regards

Stefan Mangold

...
Am 01.07.2021 um 10:17 schrieb 田能全 :

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

https://www.researchgate.net/publication/231097049_Cs_L-edge_EXAFS_atomic_ab...

Kind regards,

N. C. Tien

Mangold, Stefan (IPS) 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 :

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 _______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit

_______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit

Carlo Segre

6:52 p.m.

New subject: [Ext] Re: Question about CsNO3 L3 edge

Hi Tien: The transmission data is always sloping down because the absorption coefficient, which is being measured in absolute terms by transmission, varies as E^-3 except where there is an edge jump. Therefore you should see that downward slope in transmission if you have measured it correctly. The fluorescence measurement is not giving you the absolute absorption but something which should be proportional to it. the slope of that baseline very much depends on the details of the sample and the detector. Carlo On Thu, Jul 1, 2021 at 5:59 AM Tien Neng-Chuan wrote:

...

Thank you very much

Mangold, Stefan (IPS) 於 2021年7月1日下午5:05 寫道：

the plot from researchgate is transmission data, your data is fluorescence;

best regards

Stefan Mangold

Am 01.07.2021 um 10:17 schrieb 田能全 :

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

https://www.researchgate.net/publication/231097049_Cs_L-edge_EXAFS_atomic_ab...

Kind regards,

N. C. Tien

Mangold, Stefan (IPS) 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 :

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 _______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit

_______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit

_______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit

-- Carlo U. Segre -- Duchossois Leadership Professor of Physics Professor of Materials Science & Engineering Director, Center for Synchrotron Radiation Research and Instrumentation Illinois Institute of Technology Voice: 312.567.3498 Fax: 312.567.3494 segre@iit.edu http://phys.iit.edu/~segre segre@debian.org

dcnguyen

9:11 a.m.

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 To:XAFS Analysis using Ifeffit 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? https://www.researchgate.net/publication/231097049_Cs_L-edge_EXAFS_atomic_ab... Kind regards, N. C. Tien Mangold, Stefan (IPS) 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 : 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 _______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit _______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit _______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit

Tien Neng-Chuan

10:56 a.m.

Thank you very much

...

dcnguyen 於 2021年7月1日下午5:11 寫道：

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 To:XAFS Analysis using Ifeffit 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?

https://www.researchgate.net/publication/231097049_Cs_L-edge_EXAFS_atomic_ab...

Kind regards,

N. C. Tien

Mangold, Stefan (IPS) 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 :

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 _______________________________________________ Ifeffit mailing list Ifeffit@millenia.cars.aps.anl.gov http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit Unsubscribe: http://millenia.cars.aps.anl.gov/mailman/options/ifeffit

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Carlo Segre
dcnguyen
Mangold, Stefan (IPS)
Tien Neng-Chuan
田能全

Question about CsNO3 L3 edge

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