| 1. |
- Bässler, M., et al.
(författare)
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Beam line I411 at MAX II - Performance and first results
- 2001
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Ingår i: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. - 0168-9002. ; 469:3, s. 382-393
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Tidskriftsartikel (refereegranskat)abstract
- We report on the characteristics and first results from the soft X-ray beam line I411, based on an undulator at the third generation synchrotron facility MAX II, Sweden. The beam line is designed for high-resolution, angle-resolved electron spectroscopy on gases, liquids and solids. Main components are the modified SX700 monochromator and the end station, both of which were previously used at beam line 51 at MAX I. The end station is equipped with a rotatable SES-200 hemispherical electron-analyser. Before the end station, a one-metre section is reserved for exchangeable experimental set-ups. The usable photon energy range is 50-1500 eV and the photon flux is two orders of magnitudes higher compared to beam line 51. At 400 eV a resolving power of about 5700 in the first order of the monochromator grating could be obtained. In gas phase, a total electron energy resolution of 16 meV has been achieved. Detailed results on the undulator performance, flux, photon and electron energy resolution as well as some technical details are presented here. As an example of the capabilities of the beam line I411, we present the fully vibrationally resolved Auger resonant Raman electron spectrum of gas-phase N 2.
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| 2. |
- Bässler, M., et al.
(författare)
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Soft x-ray undulator beam line 1411 at MAX-II for gases, liquids and solid samples
- 1999
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Ingår i: Journal of Electron Spectroscopy and Related Phenomena. - : Elsevier BV. - 0368-2048. ; 101-103, s. 953-957
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Tidskriftsartikel (refereegranskat)abstract
- We report on the build-up of the new undulator beam line 1411 at the third-generation synchrotron radiation facility MAX II in Lund, Sweden. This beam line is based on an upgraded version of the modified SX700-monochromator and the end station which were installed previously at beam line 51 at MAX I. The end station is equipped with a rotatable Scienta hemispherical electron-analyser making angle-resolved high resolution electron spectroscopy possible for various kinds of samples. The beam line performance will be considerably improved on MAX II due to a new undulator and the superior light source properties, e.g. the small vertical electron beam size. Undulator spectra have been measured and estimates of the photon flux at the experiment and the expected energy resolution are presented. The parameters for a new refocusing mirror were defined by ray tracing using the beam waist of the undulator. The beam line length was extended by 1 m to offer additional space for exchangeable experimental chambers.
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| 3. |
- Ausmees, A, et al.
(författare)
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Observation of excitation-energy-dependent Xe 4d(5/2,3/2)(-1) lifetime widths
- 1999
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Ingår i: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS. - : IOP PUBLISHING LTD. ; 32:9
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- The creation and decay of photon-excited Xe 4d(5/2,3/2)(-1) core-hole states has been studied in the photon energy region 70-110 eV, where photon absorption is dominated by the strong shape resonance. Unprecedented experimental quality has enabled the stu
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| 4. |
- Bassler, M, et al.
(författare)
-
Beam line 1411 at MAX II - performance and first results
- 2001
-
Ingår i: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT. - : ELSEVIER SCIENCE BV. - 0168-9002. ; 469:3, s. 382-393
-
Tidskriftsartikel (refereegranskat)abstract
- We report on the characteristics and first results from the soft X-ray beam line I411, based on an undulator at the third generation synchrotron facility MAX II, Sweden. The beam line is designed for high-resolution, angle-resolved electron spectroscopy o
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| 5. |
- Bassler, M, et al.
(författare)
-
Soft X-ray undulator beam line I411 at MAX-II for gases, liquids and solid samples
- 1999
-
Ingår i: JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA. - : ELSEVIER SCIENCE BV. - 0368-2048. ; 103, s. 953-957
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- We report on the build-up of the new undulator beam line I411 at the third-generation synchrotron radiation facility MAX II in Lund, Sweden. This beam line is based on an upgraded version of the modified SX700-monochromator and the end station which were
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| 6. |
- Carravetta, V, et al.
(författare)
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Excitation-energy-dependent resonant photoemission: C1s-pi* spectra of carbon monoxide
- 1997
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Ingår i: PHYSICAL REVIEW A. - : AMER INST PHYSICS. - 1050-2947. ; 56:6, s. 4665-4674
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- High-resolution measurements of the x-ray resonant photoemission of CO near the C1s-->pi* transition are presented. The branching ratios for the valence shell ionization close to the resonance how a strong dependence on the photon energy with a clear asym
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| 7. |
- Osborne, SJ, et al.
(författare)
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The vibrationally resolved C 1 s core photoelectron spectra of methane and ethane
- 1997
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Ingår i: JOURNAL OF CHEMICAL PHYSICS. - : AMER INST PHYSICS. - 0021-9606. ; 106:5, s. 1661-1668
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Recent progress in the development of high-resolution electron spectrometers in combination with highly monochromatized undulator radiation has allowed observation of the vibrationally resolved gas-phase C Is photoelectron spectra of methane and ethane. F
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| 8. |
- Sundin, S, et al.
(författare)
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Auger decay of core-excited higher Rydberg states of carbon monoxide
- 1997
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Ingår i: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS. - : IOP PUBLISHING LTD. - 0953-4075. ; 30:19, s. 4267-4278
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The de-excitation of higher core-excited C 1s(-1)np Rydberg states of carbon monoxide has been studied. It is found that already with a main quantum number of 4 or higher, Rydberg states of p-symmetry can be successfully treated within the single-particle
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| 9. |
- Sundin, S, et al.
(författare)
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Collapse of vibrational structure in the Auger resonant Raman spectrum of CO by frequency detuning
- 1997
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Ingår i: PHYSICAL REVIEW LETTERS. - : AMER INST PHYSICS. - 0031-9007. ; 79:8, s. 1451-1454
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Observations made in the C1s-->pi* Auger resonant Raman spectra of carbon monoxide demonstrate that the vibrational structure in such spectra is strongly frequency dependent. In the limit of narrow bandpass photon excitation, the vibrational excitations o
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| 10. |
- Sundin, S, et al.
(författare)
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Influences from the C 1s shape resonance on the vibrational progression in the Auger decay of CO
- 1998
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Ingår i: PHYSICAL REVIEW A. - : AMERICAN PHYSICAL SOC. - 1050-2947. ; 58:3, s. 2037-2042
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Auger decay from the C Is con-ionized state of CO has been studied with vibrational resolution both at the C Is shape resonance and far above. Variations in the vibrational intensity distribution with photon energy are observed. This observation is explai
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