Search for dissertations about: "14C measurements"

Showing result 1 - 5 of 20 swedish dissertations containing the words 14C measurements.

  2. 1. 11C/14C and 18F/19F kinetic isotope effects : methods, measurements and calculations

    Author : Svante Axelsson; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : .... READ MORE

  4. 2. Exploring the Possibilities of 14C Bomb-Pulse Dating of Human Tissue Samples

    Author : Elisavet Georgiadou; Kärnfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; 14C measurements; Bomb-pulse dating; human body; serum; plaque; Fysicumarkivet A:2014:Georgiadou;

    Abstract : The testing of nuclear weapons in the atmosphere, in the middle of the 20'h century, resulted in a bomb-pulse excess of atmospheric 14C. A bomb-pulse dating method was thus developed. The latter is a method to determine the time of formation of formerly living modern (i.e. READ MORE

  5. 3. Solar variability over the Holocene period : disentangling geomagnetic and solar influences on a new continuous 10Be record from Little Dome C, Antarctica

    Author : Hoang Long Nguyen; MERGE: ModElling the Regional and Global Earth system; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Ice core; cosmogenic radionuclide; 10Be; 14C; solar activity; paleomagnetism; ; Holocene;

    Abstract : Reliable information on solar activity over the Holocene period is important to predict the Sun in the future and to understand the mechanism behind the Sun-climate linkage. Presently, there are discrepancies in the proxy data of solar activity due to reasons that are not yet understood. READ MORE

  6. 4. Improvement of the AMS-technique and applications to 3H and 59Ni Measurements

    Author : Madis Kiisk; Kärnfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; accelerator mass spectrometry AMS ; development of AMS technique; 59Ni; tritium; Kärnfysik; Nuclear physics; Fysicumarkivet A:2003:Kiisk;

    Abstract : Accelerator mass spectrometry (AMS) is a highly sensitive technique for counting atoms. Its main advantage in comparison with radiometric methods is the smaller amount of sample required (by a factor of a thousand). The method has a high efficiency and requires only some ten mg of sample material. READ MORE

  7. 5. Development of the Lund AMS facility for the detection of Al-26 -- with applications in plant ecology

    Author : Mikko Faarinen; Kärnfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ion source; injector; plant material; Nuclear physics; Kärnfysik; aluminium; Accelerator mass spectrometry; AMS; Fysicumarkivet A:2003:Faarinen;

    Abstract : Accelerator mass spectrometry (AMS) is a highly sensitive technique to count atoms. The method has a high efficiency, which makes it possible to measure small samples in a relatively short time, usually less than an hour. During the work for this thesis, methods have been developed to detect Al-26 at the Lund AMS facility. READ MORE