The authors propose using a TES microcalorimeter and calcium isotopes with well-known nucleon densities to measure the isovector part of the antiproton-nucleus optical potential.
High-resolution gamma-ray spectroscopy with a microwave-multiplexed transition-edge sensor array
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
We demonstrate very high resolution photon spectroscopy with a microwave-multiplexed two-pixel transition-edge sensor (TES) array. We measured a $^{153}$Gd photon source and achieved an energy resolution of 63 eV full-width-at-half-maximum at 97 keV and an equivalent readout system noise of 86 pA/$\sqrt{\text{Hz}}$ at the TES. The readout circuit consists of superconducting microwave resonators coupled to radio-frequency superconducting-quantum-interference-devices (SQUID) and transduces changes in input current to changes in phase of a microwave signal. We use flux-ramp modulation to linearize the response and evade low-frequency noise. This demonstration establishes one path for the readout of cryogenic X-ray and gamma-ray sensor arrays with more than $10^3$ elements and spectral resolving powers $R=\lambda/\Delta\lambda > 10^3$.
citation-role summary
background 1
citation-polarity summary
fields
nucl-ex 1years
2025 1verdicts
CONDITIONAL 1roles
background 1polarities
unclear 1representative citing papers
citing papers explorer
-
Precision Spectroscopy of Antiprotonic Atoms for Investigation of Low-energy Antinucleon-nucleus Interactions
The authors propose using a TES microcalorimeter and calcium isotopes with well-known nucleon densities to measure the isovector part of the antiproton-nucleus optical potential.