Essays about: "rosetta probe"

Showing result 1 - 5 of 6 essays containing the words rosetta probe.

  1. 1. Electron cooling in a cometary coma

    University essay from Uppsala universitet/Institutionen för fysik och astronomi

    Author : Simon Alinder; [2017]
    Keywords : Comet; Plasma; Inner coma;

    Abstract : The ESA Rosetta spacecraft investigated comet 67P/Churyumov-Gerasimenko duringtwo years from August 2014 to the end of September 2016. The dual Langmuir probewas used to measure plasma parameters including the thermal energy of theelectrons. READ MORE

  3. 2. Analysis of Calibration and Surface Contamination on the Rosetta Langmuir Probe Instrument

    University essay from Uppsala universitet/Institutet för rymdfysik, Uppsalaavdelningen

    Author : Ava Gramin; [2017]
    Keywords : ;

    Abstract : .... READ MORE

  4. 3. Numerical simulation of Rosetta Langmuir Probe

    University essay from Rymd- och plasmafysik

    Author : Fredrik Johansson; [2013]
    Keywords : SPIS; Rosetta; Langmuir Probe; Simulation; IRF;

    Abstract : By modelling and simulating the ESA spacecraft Rosetta in a plasma with solar wind parameters, and simultaneously simulating a particle detection experiment of Langmuir probe voltage sweep type using the ESA open source software SPIS Science, we investigate the features of Rosetta’s envi- ronment in the solar wind and the e↵ect of photoemission from the space- craft on the measurements made by the Langmuir Probe instrument on board Rosetta. For a 10 V positively charged spacecraft and Maxwellian distributed photoelectron emission with photoelectron temperature, Tf = 2 eV in a plasma of typical 1 AU solar wind parameters: ne = 5 ⇥ 106 m3, vSW = 4 ⇥ 105 m/s, Te = 12 eV, Tion = 5 eV, we detect a floating potential of 6. READ MORE

  5. 4. Rosetta Langmuir probe performance

    University essay from Institutionen för fysik och astronomi

    Author : Fredrik Johansson; [2013]
    Keywords : Rosetta; SPIS; SPIS 5; Langmuir; Probe; Plasma; Probe sweep; Potential; Simulation; PIC; IRF; Swedish Institute of Space Physics; ESA;

    Abstract : Several Langmuir probe voltage sweeps by a model of the ESA spacecraft Rosetta was simulated in a plasma with solar wind parameters using the ESA open source software SPIS 5. The simulations were carried out to in- vestigate the features of the spacecraft’s environment in the solar wind and the effect of photoemission from the spacecraft surface on the measurements made by the Langmuir probes on board Rosetta. READ MORE

  6. 5. Photoemission on the Rosetta spacecraft

    University essay from Institutet för rymdfysik, Uppsalaavdelningen

    Author : Andreas Johlander; [2012]
    Keywords : photoemission; rosetta; langmuir probe; space;

    Abstract : Rosetta is a European spacecraft that will rendevouz with andfollow the comet 67P/Churyumov-Gerasimenko from 2014 to 2015. Among other instruments are two Langmuir probes that measure certain plasma parameters. This study aims to describe the photoemssionon Rosetta and in particular on the Langmuir probes. READ MORE