Superconducting Transition Edge Sensor for Gamma-Ray Spectroscopy

Gamma-ray Spectrometers using Superconducting Transition Edge Sensors with External Active Feedback Bias

Transition from analogue-to-digital nuclear electronics for precise gamma radiation spectroscopy: advantages and limitations

In this paper, digital signal processing for precise gamma ray spectroscopy is presented. The basis of this system is a 14bit waveform digitizer which samples the output of pre-amplifier signals directly. The advantages and limitations of the digital spectrometer compared with analog spectrometer has been tested and analyzed from precise gamma ray spectroscopy point of view. The results shows t...

Cryogenic Detector Development at LLNL: Ultraviolet, X-ray, Gamma-ray and Biomolecule Spectroscopy

We are developing low-temperature detectors for optical, ultraviolet, X-ray, and gamma-ray spectroscopy, and for biomolecular mass spectrometry. We present here a survey of our recent work in developing these detectors and some of the first results in applying these detectors for materials analysis and biomolecular mass spectrometry. We have measured thin-film Nb/Al/Al2O3/Al/Nb superconducting ...

Response of a Superconducting Transition-Edge Sensor Microcalorimeter with a Mushroom-shaped Absorber to L X-rays Emitted by Transuranium Elements

A four-pixel-array superconducting transition-edge sensor (TES) microcalorimeter with a mushroom-shaped absorber was fabricated for the energy dispersive spectroscopy performed on a transmission electron microscope. The TES consists of a bilayer of Au/Ti with either a 50nm or 120-nm thickness. The absorber of 5.0 μm thick is made from a Au layer and its stem is deposited in the center of the TE...

Soft X-ray absorption spectroscopy and resonant inelastic X-ray scattering spectroscopy below 100 eV: probing first-row transition-metal M-edges in chemical complexes.

X-ray absorption and scattering spectroscopies involving the 3d transition-metal K- and L-edges have a long history in studying inorganic and bioinorganic molecules. However, there have been very few studies using the M-edges, which are below 100 eV. Synchrotron-based X-ray sources can have higher energy resolution at M-edges. M-edge X-ray absorption spectroscopy (XAS) and resonant inelastic X-...