| 1. |
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| 2. |
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| 3. |
- BALTZER, P, et al.
(författare)
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AN EXPERIMENTAL AND THEORETICAL-STUDY OF THE VALENCE SHELL PHOTOELECTRON-SPECTRUM OF ALLENE
- 1995
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Ingår i: CHEMICAL PHYSICS. - : ELSEVIER SCIENCE BV. - 0301-0104. ; 196:3, s. 551-567
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The photoelectron spectrum of allene has been studied using He I, He II and synchrotron radiation as sources for ionisation. In addition to the main bands associated with the single hole states, a complex satellite structure due to many-electron effects h
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| 4. |
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| 5. |
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| 6. |
- BALTZER, P, et al.
(författare)
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AN EXPERIMENTAL-STUDY OF THE VALENCE SHELL PHOTOELECTRON-SPECTRUM OF HYDROGEN-SULFIDE
- 1995
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Ingår i: CHEMICAL PHYSICS. - : ELSEVIER SCIENCE BV. - 0301-0104. ; 195:1-3, s. 403-422
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The complete valence shell photoelectron spectrum of hydrogen sulphide has been studied in the 10 to 25 eV binding energy region using He I, He II and synchrotron radiation. Using monochromated synchrotron radiation, photoelectron angular distributions an
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| 7. |
- Baltzer, P, et al.
(författare)
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An experimental study of the valence shell photoelectron spectrum of the NO2 molecule
- 1998
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Ingår i: CHEMICAL PHYSICS. - : ELSEVIER SCIENCE BV. - 0301-0104. ; 237:3, s. 451-470
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The complete valence shell photoelectron spectrum of the NO2 molecule has been studied in the binding energy range between 10 and 50 eV. HeI and HeII resonance radiation as well as monochromated synchrotron radiation have been used for the ionisation. Ass
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| 8. |
- Berntsen, Magnus H., et al.
(författare)
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A spin- and angle-resolving photoelectron spectrometer
- 2010
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Ingår i: Review of Scientific Instruments. - : AIP Publishing. - 0034-6748 .- 1089-7623. ; 81:3
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Tidskriftsartikel (refereegranskat)abstract
- A new type of hemispherical electron energy analyzer that permits angle and spin resolved photoelectron spectroscopy has been developed. The analyzer permits standard angle resolved spectra to be recorded with a two-dimensional detector in parallel with spin detection using a mini-Mott polarimeter. General design considerations as well as technical solutions are discussed and test results from the Au(111) surface state are presented.
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| 9. |
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| 10. |
- Céolin, Denis, et al.
(författare)
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A rotatable electron spectrometer for multicoincidence experiments
- 2010
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Ingår i: Review of Scientific Instruments. - : AIP Publishing. - 1089-7623 .- 0034-6748. ; 81:6
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Tidskriftsartikel (refereegranskat)abstract
- We have developed a rotatable hemispherical spectrometer with good energy and angular resolution, which can be positioned with the lens axis arbitrarily within a solid angle of 1 pi. The collection angle of the emitted electrons with respect to the polarization axis of the light is set by means of a three-axes goniometer, operating under vacuum. An important requirement for this setup was the possibility to perform coincidences between the electron analyzed by the spectrometer and one or several other particles, such as ions, electrons, or photons. The lens system and the hemispheres have been designed to accommodate such experimental demands, regarding parameters such as the resolving power, the acceptance angle, or the width of the kinetic energy window which can be recorded for a given pass energy. We have chosen to detect the impact position of the electron at the focal plane of the hemispherical analyzer with a delay line detector and a time-to-digital converter as acquisition card rather than using a conventional charge-coupled device camera. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3449333]
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| 11. |
- Edvardsson, D, et al.
(författare)
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A photoabsorption, photodissociation and photoelectron spectroscopy study of NH3 and ND3
- 1999
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Ingår i: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS. - : IOP PUBLISHING LTD. - 0953-4075. ; 32:11, s. 2583-2609
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The absolute photoabsorption, photoionization and photodissociation cross sections and the photoionization quantum efficiency of ammonia and deuterated ammonia have been measured from the ionization threshold to 25 eV using a double ion chamber and monoch
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| 12. |
- Edvardsson, D, et al.
(författare)
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Doppler-free kinetic energy release spectrum of NO2+ and ab initio CI calculations
- 1996
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Ingår i: CHEMICAL PHYSICS LETTERS. - 0009-2614. ; 256:3, s. 341-347
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The nitric oxide dication, NO2+, is studied using Doppler-free kinetic energy release spectroscopy and ab initio CI calculations. The C-2 Sigma(+) and 2 (II)-I-4 states have been observed and studied at vibrational resolution. The B (2) Sigma(+) state has
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| 13. |
- EDVARDSSON, D, et al.
(författare)
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ROTATIONAL FINE-STRUCTURE IN THE UV PHOTOELECTRON-SPECTRA OF HF AND HCL
- 1995
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Ingår i: JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA. - : ELSEVIER SCIENCE BV. - 0368-2048. ; 73:2, s. 105-124
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- He I and Ne I excited photoelectron spectra of the HF and HCl molecules have been recorded at a photoelectron linewidth (FWHM) of 2.5-3.5meV. At this resolution much of the rotational structure has been resolved in the photoelectron bands associated with
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| 14. |
- Eland, JHD, et al.
(författare)
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The photoelectron spectrum of iodine cyanide, ICN
- 1997
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Ingår i: CHEMICAL PHYSICS. - : ELSEVIER SCIENCE BV. - 0301-0104. ; 222:2-3, s. 229-240
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The photoelectron spectrum of ICN has been remeasured with much higher resolution than before, The main bands are vibrationally analysed and are reconciled with the ICN+ ion emission spectrum. The spectrum has several very unusual features; one possible i
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| 15. |
- Eland, JHD, et al.
(författare)
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Vibrational structure of the BrCN+ ion from high resolution photoelectron spectroscopy
- 1996
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Ingår i: CHEMICAL PHYSICS. - : ELSEVIER SCIENCE BV. - 0301-0104. ; 212:2-3, s. 457-469
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Photoelectron spectra of bromine cyanide have been recorded at a resolution better than 5 meV using HeI excitation and at lower resolution using HeII. The existing vibrational analyses of the <(X)over tilde (2) Pi> and <(A)over tilde (2) Sigma> states are
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| 16. |
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| 17. |
- Holland, DMP, et al.
(författare)
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A photoabsorption, photodissociation and photoelectron spectroscopy study of C2H4 and C2D4
- 1997
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Ingår i: CHEMICAL PHYSICS. - : ELSEVIER SCIENCE BV. - 0301-0104. ; 219:1, s. 91-116
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The absolute photoabsorption, photoionisation and photodissociation cross sections and the photoionisation quantum efficiency of ethylene and deuterated ethylene have been measured from the ionisation threshold to 500 Angstrom using a double ion chamber a
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| 18. |
- Holland, DMP, et al.
(författare)
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A photoelectron spectroscopy study of the valence shell photoionization dynamics of acetylene
- 1998
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Ingår i: JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA. - : ELSEVIER SCIENCE BV. - 0368-2048. ; 97:3, s. 253-263
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The valence shell photoionization dynamics of acetylene were studied in the photon energy range 13-140 eV using photoelectron spectroscopy and synchrotron radiation. Photoelectron angular distributions and branching ratios were determined for the X (2)Pi(
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| 19. |
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| 20. |
- Holland, DMP, et al.
(författare)
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A study of resonant behaviour in the C(2)E(g) photoelectron band of sulphur hexafluoride
- 1996
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Ingår i: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS. - : IOP PUBLISHING LTD. ; 29:3, s. 487-498
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Angle-resolved photoelectron spectra encompassing the (A T-2(1u) + B T-2(2u)) and the C(2)E(g) states of sulphur hexafluoride have been recorded in the 20-22 eV photon energy range using synchrotron radiation. The envelope of the C(2)E(g) photoelectron ba
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| 21. |
- Holland, DMP, et al.
(författare)
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An experimental and theoretical study of the valence shell photoelectron spectrum of butadiene
- 1996
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Ingår i: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS. - : IOP PUBLISHING LTD. - 0953-4075. ; 29:14, s. 3091-3107
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The valence shell photoelectron spectrum of butadiene has been studied using He I, Hen and synchrotron radiation. In addition to the main bands associated with the single-hole states, complex satellite structure due to many-electron effects has been obser
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| 22. |
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| 23. |
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| 24. |
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| 25. |
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| 26. |
- Lundqvist, M, et al.
(författare)
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Doppler-free kinetic energy release spectrum of N-2(2+)
- 1996
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Ingår i: JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS. - 0953-4075. ; 29:8, s. 1489-1499
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- A Doppler-free kinetic energy release spectrum of N-2(2+) has been recorded using a coincident time-of-flight technique, resolving vibrational structure in the optically active A (1) Pi(u), D (3) Pi(g) and D (1) Sigma(u)(+) electronic states. A comparison
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| 27. |
- LUNDQVIST, M, et al.
(författare)
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NOVEL TIME-OF-FLIGHT INSTRUMENT FOR DOPPLER-FREE KINETIC-ENERGY RELEASE SPECTROSCOPY
- 1995
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Ingår i: PHYSICAL REVIEW LETTERS. - : AMER INST PHYSICS. - 0031-9007. ; 75:6, s. 1058-1061
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- A novel Doppler free coincidence time-of-flight technique is presented. The technique allows kinetic energy release spectra to be obtained at vibrational resolution. The only limitation of the technique from a resolution point of view is the thermal rotat
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| 28. |
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| 29. |
- Mellergard, A, et al.
(författare)
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Modelling of lattice and magnetic thermal disorder in manganese oxide
- 1998
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Ingår i: JOURNAL OF PHYSICS-CONDENSED MATTER. - : IOP PUBLISHING LTD. - 0953-8984. ; 10:42, s. 9401-9412
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The local atomic and magnetic structure of a powder;crystalline sample of MnO has been modelled for a wide range of temperatures (10-1100 K) by fitting neutron powder diffraction data using the reverse Monte Carlo technique (RMC). This method allows simul
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| 30. |
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| 31. |
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| 32. |
- Wakchaure, Prasad B., et al.
(författare)
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Synthesis of enantiopure angiotensin II type 2 receptor [AT(2)R] antagonist EMA401
- 2015
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Ingår i: Tetrahedron. - : Elsevier BV. - 0040-4020 .- 1464-5416. ; 71:38, s. 6881-6887
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Tidskriftsartikel (refereegranskat)abstract
- We report a facile synthesis of the angiotensin II type 2 receptor antagonist EMA401, which recently passed phase II clinical trials, in high overall yield. The synthesis of the key phenylalanine intermediate involved the formation of an a-nitro cinnamic ester and its reduction followed by a Pictet-Spengler cyclization, which furnished the tetrahydroisoquinoline core structure. Next, EMA401 was separated from its enantiomer EMA402 by four recrystalizations of a diastereomeric salt in 98% ee. All steps were performed on gram scale with emphasis on avoiding column purification and using readily available low cost starting materials and reagents.
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| 33. |
- Wannberg, B., et al.
(författare)
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Imaging properties of electrostatic energy analyzers with toroidal fields
- 1976
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Ingår i: Journal of Electron Spectroscopy and Related Phenomena. - 0368-2048 .- 1873-2526. ; 9, s. 111-27
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Tidskriftsartikel (refereegranskat)abstract
- Numerical values of the second-order aberration coefficients are given for two classes of toroidal fields, namely (1) the ‘quasi-spherical’ field with c=1, c’≠-1, and (2) fields with c in the region 1.6-1.8. For the ‘quasi-spherical’ fields, the second-order coefficients are given as functions of the deflection angles ω for 90°⩽ω⩽180°. The third-order coefficient for the spherical field are given in the same region. For the devices in the second class, which have one intermediary axial image, the second-order coefficients are studied as functions of c and ω, subject to the conditions that double-focusing should be obtained. The conditions under which the radial and axial image planes coincide are considered. The influence of axially curved entrance and exit surfaces is investigated. One special case (ω=180°, c=1.691, c’=-1.11), which may be favourable for an electron monochromator is discussed
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| 34. |
- Wannberg, Gudmund, et al.
(författare)
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EISCAT_3D - a next-generation European radar system for upper atmosphere and geospace research
- 2010
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Ingår i: Radio Science Bulletin. - 1024-4530. ; :333, s. 75-88
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Tidskriftsartikel (refereegranskat)abstract
- The EISCAT Scientifi c Association, together with a number of collaborating institutions, has recently completed a feasibility and design study for an enhanced performance research radar facility to replace the existing EISCAT UHF and VHF systems. This study was supported by EU Sixth-Framework funding. The new radar retains the powerful multi-static geometry of the EISCAT UHF, but will employ phased arrays, direct-sampling receivers, and digital beamforming and beam steering. Design goals include, inter alia, a tenfold improvement in temporal and spatial resolution, an extension of the instantaneous measurement of full-vector ionospheric drift velocities from a single point to the entire altitude range of the radar, and an imaging capability to resolve small-scale structures. Prototype receivers and beamformers are currently being tested on a 48-element, 224 MHz array (the "Demonstrator") erected at the Kiruna EISCAT site, using the EISCAT VHF transmitter as an illuminator.
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| 35. |
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| 36. |
- Yang, L, et al.
(författare)
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Energy-dependent valence photoelectron spectra of SF6. Ab initio calculations and measurements
- 1998
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Ingår i: JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA. - : ELSEVIER SCIENCE BV. - 0368-2048. ; 94:1-2, s. 163-179
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Ab initio calculations of branching ratios and cross-sections for inner- and outer-valence levels of SF6 have been carried out by means of the static exchange (STEX) approximation including full intrachannel interaction. The calculations cover an energy r
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| 37. |
- Öhrwall, Gunnar, et al.
(författare)
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A new energy and angle resolving electron spectrometer - First results
- 2011
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Ingår i: Journal of Electron Spectroscopy and Related Phenomena. - : Elsevier BV. - 0368-2048 .- 1873-2526. ; 183:1-3, s. 125-131
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Tidskriftsartikel (refereegranskat)abstract
- A new energy and angle resolved analyzer for photoelectron spectroscopy is described. This analyzer is based on combining an advanced focusing electron lens system with time-of-flight measurements. A position sensitive detector gives time and position for the electron events. From this information the kinetic energy and start direction are obtained through a transformation procedure, giving both a large luminosity and a very high energy resolution. The instrument analyses the angles of emission of the electrons in a cone with 30 degrees opening angle and simulations show that extremely high energy and angular resolution can be achieved simultaneously. We report the first results from this instrument, obtained at the PM-3 beam line at BESSY (Berlin, Germany). This analyzer opens up new possibilities for angular resolved electron spectroscopy, band-mapping and other applications.
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