Sökning: "time of flight spectrometer"

Visar resultat 11 - 15 av 43 avhandlingar innehållade orden time of flight spectrometer.

  1. 11. Simulations And Experiments Of Plasma-Induced Effects In Silicon Detectors

    Författare :Ana Maria Gomez L; Ali Al-Adili; Diego Tarrío; Stephan Pomp; Andreas Solders; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; VERDI - VElocity foR Direct particle Identification; PIPS - Passive Implanted Planar Silicon; PDT - Plasma Delay Time; PHD - Pulse Height Defect; FF - Fission Fragment; ToF - Time-of-flight; MCP - Micro Channel Plat; Kärnfysik; Nuclear Physics;

    Sammanfattning : When an atomic nucleus undergoes fission, two fragments with different mass and kinetic energy are emitted. The highly unstable fission fragments (FFs) evaporate prompt neutrons soon after the nucleus splits. LÄS MER

  3. 12. Interactions of chiral ions and molecules in gas phase : Towards an understanding of chiral recognition mechanism

    Författare :Oleksii Rebrov; Mats Larsson; Richard Thomas; Vitali Zhaunerchyk; Anne Zehnacker-Rentien; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; fysik; Physics;

    Sammanfattning : This thesis comprises the research related to interactions of enantiopure amino acids with chiral and achiral molecules in gas phase. The investigation of the mechanism responsible for chiral discrimination is of the special interest in this work. LÄS MER

  4. 13. Time-Frequency Analysis in Attosecond Spectroscopy

    Författare :Marcus Isinger; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Attosecond; Spectroscopy; Time-Frequency; High-order harmonic generation; Rabitt; Interferometry;

    Sammanfattning : This thesis deals with ultrafast dynamics of electronic processes in rare gas atoms. The processes we explore include photoemission, where we time the emission of electrons moving away from the atomic core following ionization by a photon; and auto-ionization, where the atom spontaneously releases an electron wave-packet following photo-excitation. LÄS MER

  5. 14. Experimental studies of cluster ions containing water, ammonia, pyridine and bisulphate

    Författare :Mauritz Johan Ryding; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; clusters; ions; water; ammonia; pyridine; bisulphate; cross sections; collision induced dissociation CID ; kinetic modelling; electrospray ionization ESI ; time-of-flight TOF ; mass spectrometry;

    Sammanfattning : Molecular cluster ions are fascinating subjects of study. Bridging the size gap between molecules and bulk, they often display non-trivial size dependent behaviour and properties. LÄS MER

  7. 15. The Anticoincidence System of the PAMELA Satellite Experiment : Design of the data acquisition system and performance studies

    Författare :Johan Lundquist; Mark Pearce; Tony Weidberg; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PAMELA; satellites; astroparticle physics; electronics; anticoincidence system; trigger system; Astroparticle physics; Astropartikelfysik;

    Sammanfattning : PAMELA is a satellite-borne cosmic ray experiment. Its primary scientific objective is to study the antiproton and positron components of the cosmic radiation. This will be done with unprecedented statistics over a wide energy range (~10MeV to ~100GeV). LÄS MER