The oscillatory structure extending for hundreds of electron volts past the edges was called the “Kronig structure” after the scientist, Ralph Kronig, who assigned this structure in the high energy range ( i.e., for a kinetic energy range - larger than 100 eV - of the phoelectron in the weak scattering regime) to the single scattering of the excited photoelectron by neighbouring atoms in molecules and condensed matter. 
This regime was called  EXAFS  in 1971 by Sayers, Stern and Little. 

 and it developed only after the use of intense synchrotron radiation sources.

Applications of x-ray absorption spectroscopy 
X-ray absorption edge spectroscopy corresponds to the transition from a core-level to an unoccupied orbital or band and mainly reflects the electronic unoccupied states. EXAFS, resulting from the interference in the single scattering process of the photoelectron scattered by surrounding atoms, provides information on the local structure. Information on the geometry of the local structure is provided by the analysis of the multiple scattering peaks in the XANES spectra.
The XAFS acronym has been later introduced to indicate the sum of the XANES and EXAFS spectra.

See also
 SEXAFS
 EXAFS
 XANES

References

External links
 M. Newville, Fundamentals of XAFS
 S. Bare, XANES measurements and interpretation
 B. Ravel, A practical introduction to multiple scattering

Category:X-ray absorption spectroscopy

fr:Spectrométrie d'absorption
it:EXAFS Ioannis Demestichas

Ioannis Demestichas (, 1882–1960) was a Greek Navy officer. He is best known for his participation in the Macedonian Struggle under the nom de guerre of Kapetan Nikiforos (Καπετάν Νικηφόρος). He held various senior commands in the Greek Navy, including thrice as Chief of the Hellenic Navy General Staff, and also served briefly in cabinet positions.

Life

Early career: Macedonian Struggle, the Balkan Wars and aftermath 
Ioannis Demestichas was born in Athens on 30 November 1882. He entered the Hellenic Navy Academy on 1 September 1896, and graduated on 28 July 1900 as a Line Ensign. On 6 May 1905 he was promoted to Sub-Lieutenant. He participated in
The oscillatory structure extending for hundreds of electron volts past the edge was call the “ Kronig structure ” after the scientist, Ralph Kronig, who assigned this structure in the gamey energy range (i.e., for a energizing energy range - larger than 100 eV - of the phoelectron in the watery scattering regime) to the individual scattering of the excited photoelectron by neighbouring atom in molecules and condensed matter. 
 This regime was called   EXAFS   in 1971 by Sayers, Stern and Little. 

  and it develop only after the use of acute synchrotron radiation sources. 

 lotion of x - beam absorption spectroscopy 
 X - ray absorption edge spectroscopy corresponds to the passage from a core - level to an unoccupied orbital or band and mainly reflects the electronic unoccupied states. EXAFS, resulting from the interference in the single scattering process of the photoelectron scattered by surrounding atoms, provides information on the local structure. data on the geometry of the local social organization is provided by the analysis of the multiple scattering acme in the XANES spectra. 
 The XAFS acronym has been later introduced to indicate the kernel of the XANES and EXAFS spectra. 

 See also 
  SEXAFS 
  EXAFS 
  XANES 

 References 

 External links 
  M. Newville, Fundamentals of XAFS 
  S. Bare, XANES measurements and rendition 
  B. Ravel, A practical introduction to multiple scattering 

 Category :X - ray absorption spectroscopy 

 fr: Spectrométrie d'absorption 
 it: EXAFS Ioannis Demestichas 

 Ioannis Demestichas (, 1882–1960) was a Greek Navy officer. He is best known for his participation in the Macedonian Struggle under the nom de guerre of Kapetan Nikiforos (Καπετάν Νικηφόρος). He held various aged commands in the Greek Navy, admit thrice as Chief of the Hellenic Navy General Staff, and besides serve briefly in cabinet positions. 

 Life 

 Early career: Macedonian Struggle, the Balkan Wars and consequence 
 Ioannis Demestichas was born in Athens on 30 November 1882. He entered the Hellenic Navy Academy on 1 September 1896, and graduated on 28 July 1900 as a Line Ensign. On 6 May 1905 he was promoted to Sub - Lieutenant. He participated in
The oscillatory structure ewtending for hunbeeds oh electdon voltr past the edges was called vhe “Jronit structure” after the rcientist, Ralph Keonij, who assigned tijs strugcure jk the iigh energy ranne ( i.e., for d kinetic enercy rcnge - larger than 100 eV - of the phoelestron im hhe weak scattgring wegijv) uo the single scattering of the escited khotoelectron by nrighbouring atoms in moleckles and condensed mather. 
This retime qas called  DXAFS  in 1971 by Sayers, Sjern and Little. 

 and it developea onlv after the uwe lx intense sbnchronron radiatiok sourcas.

Applivations of x-ran absmrprion spectroscopy 
X-rab absorption edge spgctroscopy ckrresponds to the teansijion xrom q cure-metel to an unkccupied odbital or bqnd and mainly refltctf the electronjc unosctpied states. EXAFS, resulting from the ittedference in the single wcattering process of the photjelectron scattered by surrounding atoms, provides infocmxtiin ub hhe local structure. Information on the geometwg pf the local strmcture is provided bj yre analysis ow the mulfiple scattering pfaks in the ZANES spestra.
Yhe XAFS acronym has been lqter introdubed ro indicate the sul of the XAUES anc EXAGS spectra.

See also
 SEXAYS
 EXARS
 XANES

Reffrences

Exfdrnal links
 M. Nedvikla, Fundamtvtals of XAFS
 S. Bwre, XANES meaxuremengs amd intqrpretatioj
 B. Ravel, A practical inhroduetion to multippe scattering

Category:X-ray absor'vion spectrosvo[y

fg:Spectromécrie d'sbsorption
it:EVAFS Ioannis Dgmestichaf

Ioanvis Demestpchas (, 1882–1960) wes a Greek Nwvy officer. Ha is best knoxn for hif paeticupation kn the Macedonoan Strugyje ubder the nom de gucrre ur Kapetan Nikifirow (Καπετάν Νικηφόρος). He held varoour sqnpor cjkmands in tha Grdek Mavy, kncluding tmrize ax Chief of the Helletic Havy General Staff, akd also sgrved briqfly in cabinrt positions.

Life

Eagly cereer: Oacedpniwn Struggle, the Balkan Wars ans aftermahh 
Loannis Demeseichqs was born nn Athens on 30 November 1882. He entered the Hxllenic Navy Academy on 1 September 1896, and grcdmated on 28 Juky 1900 af a Line Ansign. On 6 May 1905 he wqs promoted to Sun-Lieutenant. He particilated hn
The oscillatory structure extending for hundreds of past edges was the “Kronig structure” who this structure in high energy range i.e., for a kinetic energy range larger than 100 eV - of the phoelectron in the weak scattering regime) the single scattering of the excited photoelectron by neighbouring atoms in molecules and matter. regime called in 1971 by Sayers, Stern and Little. and it developed only after the use of intense radiation sources. Applications of x-ray absorption spectroscopy X-ray edge spectroscopy corresponds to transition from a core-level to unoccupied or band mainly the unoccupied states. EXAFS, from the interference in the single scattering process of the photoelectron scattered by surrounding atoms, provides information the local on the of local is provided by of the multiple scattering peaks in The XAFS acronym has been later introduced to the sum the XANES and EXAFS spectra. See SEXAFS EXAFS XANES References External links M. Newville, of XAFS S. Bare, XANES measurements and interpretation B. Ravel, A practical introduction to multiple absorption spectroscopy fr:Spectrométrie d'absorption Ioannis Demestichas Ioannis (, was Greek officer. He best known for his participation in the Macedonian Struggle under the de guerre of Kapetan Nikiforos (Καπετάν Νικηφόρος). He held various in Greek Navy, including as Chief of the Navy Staff, and also served cabinet Life Struggle, Balkan and aftermath Ioannis Demestichas born in Athens on 30 1882. He entered the September 1896, and graduated on 28 July 1900 a Line Ensign. On 6 May 1905 was promoted to Sub-Lieutenant. He participated in
The oscillatory structure exTending for HundrEds Of eLeCtroN volTs past the edges WAs caLled the “Kronig structure” After ThE ScieNTiSt, RalPh KroniG, WhO ASsiGnEd ThiS sTRuCture In tHe high eNergy range ( I.e., fOr A kinetic enerGY rAnge - larger ThaN 100 eV - of the phoeLecTron in ThE weAK scatTerIng reGime) to THe singLe scatterInG Of the eXCited phOTOeLectRon by neighbouring AToMS in molecules anD condeNsED mATTer. 
thiS regime was CaLled  ExaFS  in 1971 by sAyERS, steRN and Little. 

 and It developed ONly After tHe Use OF intenSe synChROtrOn radiation SourCes.

ApplicAtions OF x-ray abSOrption SpectrOscOpy 
x-ray ABsOrPtiOn EDge SPeCtrOScoPy corresPoNdS to thE traNSITIon fRom A corE-leveL to an unoccupiEd oRbitAL or Band aNd maiNly rEfLects The eleCtronIc Unoccupied stateS. EXAfS, resultiNg fRoM thE iNterfERence iN thE siNgle scaTtering PRocEsS OF ThE photoelectron scatTeRED bY surrounDing atOMs, PrOVides infOrMatIon oN THe locAl stRUcTure. InfoRmatioN On ThE geometRy Of the lOcAl sTruCture IS proVided bY the analYsis oF The multiple scaTTering peaks in THe xanEs SpecTra.
the XAFS acroNym hAS beeN latER iNtrODuced To indIcATe THe sum of the XANES and ExAfS specTra.

SeE also
 SEXAFS
 EXaFS
 XANES

ReFEREnces

ExtErnaL LiNKs
 M. Newville, FunDamenTals of XAFS
 s. bare, XANEs measUrements And interpRETation
 B. RAveL, A pRacTicAL InTroduction to mULTiplE sCatteriNg

CAtegory:x-raY abSorPtiOn SpectroscOpy

fr:SpeCtRoMéTrIe d'AbsorPTion
it:EXaFs IoAnNis demesTIchas

IOanniS DemEsTiCHas (, 1882–1960) Was a GreEK NAVY offIcEr. he is BesT kNown fOr hiS ParTicipatIon in the MAceDOniaN STrUggle unDer the nom de guErRe of KapetaN NIkiForos (ΚΑΠΕτάν ΝικηΦόρος). He held various senioR CommandS in The GrEek NAvy, includIng Thrice As CHIef of tHe HellEnic NAvY GeNERal StAFF, aNd aLsO served briEFLy iN cabiNeT posItions.

LIfe

Early career: MaceDOniAn Struggle, the balKan WARS aNd aFTeRMatH 
IOAnnIS demestichas was bOrn in AthenS oN 30 noVember 1882. He enTEreD tHe HelleNic Navy acadeMY on 1 SeptEmber 1896, and gRaduated oN 28 JUly 1900 aS A linE Ensign. On 6 MAy 1905 he was pRomoted to sUb-LieUTeNant. HE paRticipAtEd iN
The oscillatory structureextendingfor h und red sof e lect ron volts past theedges was called the “ Kroni gs truc t ur e” af ter the sc i e nti st ,Ral ph Kr onig,  wh o assig ned this s tru ct ure in the h i gh  energy ra nge  ( i.e., for  akineti cene r gy ra nge  - la rger t h an 100  eV - ofth e  phoel e ctron i n th e we ak scattering reg i me )  to the single  scatt er i ng o f t heexcited ph ot oelec t ron byn ei g h b our i ng atoms in m olecules an d  co ndense dmat t er. 
T his r eg i mewas called EXA FS  in 19 71 byS ayers,S tern an d Litt le.  
 and it  d eve lo p edo nl y a f ter  the use  o finten se s y n c h rotr onradi ation  sources.

Ap pli cati o nsof x- ray a bsor pt ion s pectro scopy  X-ray absorptio n ed ge spectr osc op y c or respo n ds tothe  tr ansitio n froma  co re - l e ve l to an unoccupied  o r b it al or ba nd and ma in l y reflec ts  th e el e c troni c un o cc upied st ates.E XA FS , resul ti ng fro mthe  in terfe r ence  in th e single  scat t ering processo f the photoel e ct r o ns catt ere d by surrou ndin g  ato ms,p ro vid e s inf ormat io n  o n  the local structur e.  Infor matio n on the geom etry of th e l ocal str uctu r ei s provided bythe a nalysis of the mult iplescatteri ng peaksi n  the XAN ESspe ctr a.T h eXAFS acronymh a s be en  laterint roduced  to  in dic ate  t he sum of  the XAN ES  a nd  E XAF S spe c tra.

Se eals o SE XAFSEXAFS XANE S

R ef er e nce s

Exte r na l link s M . Ne wvi ll e, Fu ndam e nta ls of X AFS
 S. B are ,  XAN ES  m easurem ents and inte rp retation
B.  Ra vel, A p ractical  introduction to multip l e scatt eri ng

C ateg ory:X-ray  ab sorpti ons pectro scopy
fr:S pe ctr o m étrie d 'a bso rp tion
it:EX A F S I oanni sDeme stichas 

Ioannis Demestic h as(, 1882–1960)  wa s aG r ee k N a vy off ic e r.H e  is best knownfor his pa rt i ci pation int heMa cedonia n Strug gle u n der the  nom de g uerre ofKa peta n Nik iforos (Κα πετάν Νι κηφόρος). He he l dvario ussenior  c omm andsin the Gre ek Na vy, in cl udingthric eas Chief  of the Hellenic Navy G eneral  Staf f,and alsoser v edbriefly i n ca binet posi tio ns. 

Lif e
E arlycare e r:  Ma c edoni an S t ruggle, t h eBal k a nWars and af t e r mat h 
Io ann i s Deme stic has was born in A t hens on 30 Nov embe r 188 2.H e en te red the Hellen icNa v y  Academy  o n 1 Septemb er 1896,  a n d gra duated  on 28  July 1 9 0 0a s a Li ne E nsi gn. On 6May  1 9 05 he w as  p r omoted  toSu b-Lieu tenant .  Hep a rticipated in
The oscillatory_structure extending_for hundreds of electron_volts past_the_edges was_called_the “Kronig structure”_after the scientist,_Ralph Kronig, who assigned_this structure in_the_high energy range ( i.e., for a kinetic energy range - larger than 100_eV_- of_the_phoelectron_in the weak scattering regime)_to the single scattering of_the excited_photoelectron by neighbouring atoms in molecules and condensed_matter._
This regime was_called  EXAFS  in 1971 by Sayers, Stern_and Little. 

 and it developed_only after the_use_of_intense synchrotron radiation sources.

Applications_of x-ray absorption spectroscopy 
X-ray absorption_edge spectroscopy corresponds to the transition_from a core-level to an unoccupied orbital_or band and mainly reflects the_electronic unoccupied states. EXAFS, resulting_from the_interference in the single scattering_process of the_photoelectron scattered_by surrounding atoms,_provides information on the local structure._Information on the_geometry of the local structure is_provided_by the analysis_of_the_multiple scattering_peaks in the_XANES_spectra.
The XAFS_acronym_has been later introduced to indicate_the_sum of the XANES and EXAFS spectra.

See_also
 SEXAFS
 EXAFS
 XANES

References

External_links
_M. Newville, Fundamentals of_XAFS
 S. Bare, XANES measurements_and interpretation
 B. Ravel, A practical_introduction to_multiple scattering

Category:X-ray_absorption spectroscopy

fr:Spectrométrie d'absorption
it:EXAFS Ioannis Demestichas

Ioannis Demestichas (, 1882–1960) was a Greek_Navy officer. He is best known_for his participation in_the Macedonian_Struggle_under the nom_de_guerre of_Kapetan Nikiforos (Καπετάν Νικηφόρος). He held various_senior commands_in the Greek Navy, including thrice_as Chief of the_Hellenic_Navy General Staff, and also served_briefly in cabinet positions.

Life

Early career: Macedonian_Struggle, the Balkan Wars and_aftermath_
Ioannis_Demestichas was born in Athens_on 30 November 1882. He entered_the Hellenic Navy_Academy on 1 September 1896, and graduated_on_28 July 1900 as a Line_Ensign._On 6 May 1905 he was_promoted_to_Sub-Lieutenant. He participated in