| 1. |
- Harvey, P, et al.
(författare)
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The electric field instrument on the Polar satellite
- 1995
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Ingår i: Space Science Reviews. - 0038-6308 .- 1572-9672. ; 71, s. 583-596
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Tidskriftsartikel (refereegranskat)abstract
- The Polar satellite carries a system of four wire booms in the spacecraft spin plane and two rigid booms along the spin axis. Each of the booms has a spherical sensor at its tip along with nearby guard and stub surfaces whose potentials relative to that of their sphere are controlled by associated electronics. The potential differences between opposite sphere pairs are measured to yield the three components of the DC to >1 MHz electric field. Spheres can also be operated in a mode in which their collected current is measured to give information on the plasma density and its fluctuations. The scientific studies to be performed by this experiment as well as the mechanical and electrical properties of the detector system are described.
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| 2. |
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| 3. |
- AXELSSON, J, et al.
(författare)
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ELECTRON-EMISSION FROM CONDUCTING SURFACES IMPACTED BY MULTIPLY-CHARGED POLYATOMIC IONS
- 1995
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Ingår i: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS. - : ELSEVIER SCIENCE BV. - 0168-583X. ; 101:4, s. 343-356
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- In this paper, we present results on secondary electron emission from impacts of electrosprayed, multiply-charged, macromolecular ions on various conducting surfaces. The impact speeds are in the range v = 30 to 140 km/s and are above the threshold for ki
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| 4. |
- Behne, Dawn M., et al.
(författare)
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Perceived Swedish Vowel Quantity : Effects of Postvocalic Consonant Duration
- 1998
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Ingår i: 5th International Conference on Spoken Language Processing, ICSLP 1998. - : International Speech Communication Association.
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Konferensbidrag (refereegranskat)abstract
- In the production of Swedish, vowel quantity is known to be realized in the vowel, but also affects duration of a postvocalic consonant. The goal of this study is to examine the use of postvocalic consonant duration as a perceptual cue to vowel quantity. Listeners' responses and reaction times were recorded for synthesized materials in which the vowel spectra and duration were kept constant and the postvocalic consonant duration was adjusted. Results show no indication that listeners actively used the duration of a postvocalic consonant to identify vowel quantity. These findings suggest that adjustments in postvocalic consonant duration in Swedish productions may be temporal artifacts of the preceding vowel quantity rather than reflecting linguistically relevant information.
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| 5. |
- Hakansson, P, et al.
(författare)
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Production, acceleration and diagnostics of molecular ions and ionized clusters
- 1996
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Ingår i: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS. - : ELSEVIER SCIENCE BV. - 0168-583X. ; 112:1-4, s. 39-47
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- With the introduction of high-intensity MeV-energy cluster ion beams produced by electrostatic accelerators, several new phenomena can be studied relevant for material sciences as well as other research areas. In this paper a summary will be given on diff
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| 6. |
- Reimann, CT, et al.
(författare)
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Conformation of highly-charged gas-phase lysozyme revealed by energetic surface imprinting
- 1998
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Ingår i: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY. - : AMER CHEMICAL SOC. - 0002-7863. ; 120:30, s. 7608-7616
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- We present new results from an energetic surface imprinting method which allows us to outline the general conformation of protein ions in vacuo. Both disulfide-bond-intact and disulfide-bond-reduced gasphase lysozyme ions were produced by electrospray ion
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