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AbstractAbstract
[en] This thesis describes the development of a high resolution magnetic calorimeter for the detection of the β-spectrum of the isotope 36Cl with endpoint energy of 709.6 keV. The temperature rise of a metallic paramagnetic sensor due to an energy deposition is sensed by measuring its magnetization using a sensitive DC-SQUID magnetometer. For a high detection efficiency an 4π gold absorber was used. The heat capacity and the geometry of the absorber is optimally matched by a flat sensor and an optimized meander shaped readout coil. The fabrication of the superconducting structures and the detector setup are described. In addition, the relevant noise sources, the energy resolution and the quantum efficiency are discussed. A measured 36Cl-spectrum with an energy resolution of ΔEFWHM=750 eV is presented and compared with existing experimental and theoretical data. (orig.)
Original Title
Entwicklung magnetischer Mikrokalorimeter fuer die hochaufloesende Spektroskopie des β-Emitters 36Cl
Primary Subject
Secondary Subject
Source
13 Dec 2006; 132 p; Diss.
Record Type
Miscellaneous
Literature Type
Thesis/Dissertation; Numerical Data
Report Number
Country of publication
BACKGROUND NOISE, BETA DETECTION, BETA SPECTRA, BETA SPECTROSCOPY, BETA-MINUS DECAY, CHLORINE 36, ENERGY ABSORPTION, ENERGY RESOLUTION, ENERGY SPECTRA, EXPERIMENTAL DATA, FABRICATION, FOUR-PI DETECTORS, KEV RANGE 100-1000, MAGNETIZATION, MAGNETOMETERS, QUANTUM EFFICIENCY, RELAXATION TIME, SPECIFIC HEAT, SQUID DEVICES, TEMPERATURE DEPENDENCE
ABSORPTION, BETA DECAY, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, CHARGED PARTICLE DETECTION, CHLORINE ISOTOPES, DATA, DECAY, DETECTION, EFFICIENCY, ELECTRON CAPTURE RADIOISOTOPES, ELECTRONIC EQUIPMENT, ENERGY RANGE, EQUIPMENT, FLUXMETERS, INFORMATION, ISOTOPES, KEV RANGE, LIGHT NUCLEI, MEASURING INSTRUMENTS, MICROWAVE EQUIPMENT, NOISE, NUCLEAR DECAY, NUCLEI, NUMERICAL DATA, ODD-ODD NUCLEI, PHYSICAL PROPERTIES, RADIATION DETECTION, RADIATION DETECTORS, RADIOISOTOPES, RESOLUTION, SORPTION, SPECTRA, SPECTROSCOPY, SUPERCONDUCTING DEVICES, THERMODYNAMIC PROPERTIES, YEARS LIVING RADIOISOTOPES
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