Essays about: "IR-field"

Found 3 essays containing the word IR-field.

  1. 1. Towards the control of photo-ionization with electron wave-packet interferences

    University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Author : Andreas Stokkeland; [2020]
    Keywords : XUV attosecond pulses; photoelectron distribution; photoionization; phase shift; electron wave-packet interference; infrared field; IR-field; frequency components; Fourier transform; XUV photons; frequency domain; Physics and Astronomy;

    Abstract : In this work the photoelectric effect is explored through simulations of the phase shift that an IR-field can induce into an electron wave packet and the photoelectron distribution over frequency components that is produced in the photoionization of an atom with a attosecond pulses made of XUV photons. The IR-field is sent along two attosecond pulses made of XUV photons towards a 3D momentum spectrometer were there is a gas that can be photoionized and the photoelectrons can be measured. READ MORE

  2. 2. IR spectroscopy for vibrational modes : A semi-classical approach based on classical electrodynamicsand modern quantum mechanics

    University essay from Linnéuniversitetet/Institutionen för fysik och elektroteknik (IFE)

    Author : Ulf Oreborn; [2018]
    Keywords : ;

    Abstract : The atoms of a molecule are always restless and are constantly moving in one way or another.Apart from rotations and translations, they may vibrate in many different modes. They may moveradially toward or from each other, so called stretching. This can be done symmetrically or asymmetrically. READ MORE

  3. 3. Water movement and phosphorus leaching from managed and unmanaged grass buffer strips

    University essay from SLU/Dept. of Soil and Environment

    Author : Daniel Jack; [2016]
    Keywords : dissolved reactive phosphorus; hydraulic conductivity; organic matter; rainfall simulation; turbidity;

    Abstract : This study was undertaken in a long term field trial investigating the effect of grass buffer strips on nutrient leaching. The treatments included were harvested grass (HG), non-harvested permanent grass (PG) and cultivated soil without a buffer strip (control). READ MORE