Performance of the grating-crystal monochromator of the ALOISA beamline at the Elettra Synchrotron

The new beamline ALOISA, now operational at the Elettra Synchrotron, is designed for surface studies by means of several experimental techniques: surface x-ray diffraction and reflectivity, photoemission spectroscopy, photoelectron diffraction, e−-Auger coincidence spectroscopy. A new monochromator has been specifically designed and realized for this multipurpose beamline: it makes use of a channel-cut Si crystal dispersive element for the 3–8 keV range and of a plane mirror-plane grating element for the 200–2000 eV range. Both dispersive elements share the same optical system. In the low energy range (200–900 eV) the spectral resolving power exceeds 5000 while maintaining a throughput higher than 1010 photons/s/200 mA/0.02% BW. In the case of the N2 1s→π* and Ne 1s→3p transitions, the extremely high signal-to-noise ratio of the absorption spectra allowed a very accurate determination of the corresponding natural linewidth (116±2 and 250±10 eV, respectively). Moreover, the vibrational structure of the CO–...

[1]  C. E. Brion,et al.  Neon K-shell excitation studied by electron energy-loss spectroscopy , 1980 .

[2]  P. Kuske,et al.  Performance of the high-resolution SX700/II monochromator , 1992 .

[3]  William Ralph Hunter,et al.  Grating-crystal monochromator for the spectral range 5 eV to 5 keV (A) , 1982 .

[4]  Y. Satow,et al.  Collapse of the f-symmetric final-state wavefunction in the 3d excitation spectra of atomic Xe, Cs and Ba , 1984 .

[5]  G. Naletto,et al.  A high resolution monochromator covering wide ultraviolet spectral ranges with a single grating , 1992 .

[6]  W. Braun,et al.  Possibility of Spatially Resolved Synchrotron Radiation Spectroscopies Using a Stigmatically Focussing Monochromator , 1986, Other Conferences.

[7]  K. Prince,et al.  Measurement and ab initio calculation of the Ne photoabsorption spectrum in the region of the K edge , 1999 .

[8]  Chunying Chen,et al.  Concept and design procedure for cylindrical element monochromators for synchrotron radiation , 1987 .

[9]  J. Wilson,et al.  3d photoabsorption in gaseous and solid xenon , 1983 .

[10]  Malcolm R. Howells,et al.  Plane grating monochromators for synchrotron radiation , 1980 .

[11]  Chen,et al.  K-shell photoabsorption of the N2 molecule. , 1989, Physical review. A, General physics.

[12]  Kai Siegbahn,et al.  Lifetime Broadening and CI-Resonances Observed in ESCA , 1976 .

[13]  Sairanen,et al.  High-resolution pre-edge structure in the inner-shell ionization threshold region of rare gases Xe, Kr, and Ar. , 1996, Physical review. A, Atomic, molecular, and optical physics.

[14]  F. H. Read,et al.  Electron impact excitation of inner-shell excited states of CO , 1984 .

[15]  Giampiero Naletto,et al.  First results from the new optical configuration for a synchrotron radiation monochromator applied to the ALOISA beamline , 1997, Optics & Photonics.

[16]  H. Petersen,et al.  Plane Grating Monochromators: The Working Curve Concept as Implemented in the SX-700 , 1986, Other Conferences.

[17]  Malcolm R. Howells.  Vacuum ultra violet monochromators , 1979 .

[18]  G. Reichardt,et al.  High-resolution constant length Rowland circle monochromator at BESSY , 1998 .

[19]  Raj Korde,et al.  Stable silicon photodiodes for absolute intensity measurements in the VUV and soft X-ray regions , 1996 .

[20]  M. Piancastelli,et al.  SUBNATURAL LINEWIDTHS IN CORE LEVEL EXCITATION SPECTRA , 1998 .

[21]  S. Bernstorff,et al.  The high‐energy monochromator for the ALOISA beamline at Elettra , 1995 .

[22]  S. Svensson,et al.  The vibrationally resolved participator Auger spectra of selectively excited C 1s(2σ)−12π1 vibrational states in carbon monoxide , 1995 .

[23]  Francesco Sette,et al.  Performance of the Dragon soft x‐ray beamline (invited) , 1989 .

[24]  K. Prince,et al.  Angular distribution in xenon M 4 , 5 N 4 , 5 N 4 , 5 Auger decay , 1999 .

[25]  M. Zitnik,et al.  The Gas Phase Photoemission Beamline at Elettra , 1998 .

[26]  Yonglian Yan,et al.  Performance of a varied-space plane-grating monochromator , 1997, Optics & Photonics.

[27]  K. Prince,et al.  A critical comparison of selected 1s and 2p core hole widths , 1999 .

[28]  G C King,et al.  The observation of electric-dipole-forbidden inner-shell transitions in N2 and Ar by the electron energy-loss technique , 1982 .

[29]  T. Möller,et al.  First results from the high resolution XUV undulator beamline BW3 at HASYLAB , 1994 .

[30]  H. A. Padmore.  Application Of A Simple Rotational Spherical Grating Mounting To High Resolution Soft X-Ray Spectroscopy , 1986, Other Conferences.

[31]  H. Petersen,et al.  The plane grating and elliptical mirror: A new optical configuration for monochromators , 1982 .

[32]  K. Prince,et al.  First results from the high energy resolution photoemission beam line at ELETTRA , 1995 .

[33]  H. Siegbahn,et al.  Vibrational and lifetime line broadenings in ESCA , 1974 .

[34]  G C King,et al.  An investigation of the structure near the L2,3 edges of argon, the M4,5 edges of krypton and the N4,5 edges of xenon, using electron impact with high resolution , 1977 .

[35]  G Tondello,et al.  Grazing incidence Czerny-Turner monochromator utilizing sagittal focusing mirrors. , 1990, Applied optics.

[36]  Frank H. Read,et al.  Investigation of the energy and vibrational structure of the inner shell (1s)−1(π2p)1Π state of the nitrogen molecule by electron impact with high resolution , 1977 .