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View article: Ultra high-resolution γ-spectroscopy of 225Ac and its daughter radionuclides using MMC detectors
Ultra high-resolution γ-spectroscopy of 225Ac and its daughter radionuclides using MMC detectors Open
View article: Improved limit on the effective electron neutrino mass with the ECHo-1k experiment
Improved limit on the effective electron neutrino mass with the ECHo-1k experiment Open
The effective electron neutrino mass can be determined by analyzing the endpoint region of the $^{163}$Ho electron capture spectrum, provided a measurement with high energy resolution and high statistics using calorimetric techniques. Here…
View article: Quantum Electrodynamics in Strong Electromagnetic Fields: Substate Resolved <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">K</mml:mi><mml:mrow><mml:mi>α</mml:mi></mml:mrow></mml:mrow></mml:math> Transition Energies in Heliumlike Uranium
Quantum Electrodynamics in Strong Electromagnetic Fields: Substate Resolved Transition Energies in Heliumlike Uranium Open
Using novel metallic magnetic calorimeter detectors at the CRYRING@ESR, we recorded x-ray spectra of stored and electron cooled heliumlike uranium (U90+) with an unmatched spectral resolution of close to 90 eV. This allowed for an accurate…
View article: Publisher Erratum: Development of MMC-based lithium molybdate cryogenic calorimeters for AMoRE-II
Publisher Erratum: Development of MMC-based lithium molybdate cryogenic calorimeters for AMoRE-II Open
View article: Signal partitioning in superfluid <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>He</mml:mi></mml:mrow><mml:mprescripts/><mml:none/><mml:mn>4</mml:mn></mml:mmultiscripts></mml:mrow></mml:math>: A Monte Carlo approach
Signal partitioning in superfluid : A Monte Carlo approach Open
Superfluid He
View article: Development of MMC-based lithium molybdate cryogenic calorimeters for AMoRE-II
Development of MMC-based lithium molybdate cryogenic calorimeters for AMoRE-II Open
The AMoRE collaboration searches for neutrinoless double beta decay of $$^{100}$$ Mo using molybdate scintillating crystals via low temperature thermal calorimetric detection. The early phases of the experiment, AMoRE-pilot and AMoRE-I,…
View article: Projected background and sensitivity of AMoRE-II
Projected background and sensitivity of AMoRE-II Open
AMoRE-II aims to search for neutrinoless double beta decay ( $$0\nu \beta \beta $$ ) with an array of 423 $$\hbox {Li}_2^{100}\hbox {MoO}_4$$ crystals operating in the cryogenic system as the main phase of the Advanced Molyb…
View article: High precision measurement of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mmultiscripts><mml:mi>Tc</mml:mi><mml:mprescripts/><mml:none/><mml:mn>99</mml:mn></mml:mmultiscripts><mml:mspace width="0.16em"/><mml:mi>β</mml:mi></mml:mrow></mml:math> spectrum
High precision measurement of the spectrum Open
Highly precise measurements of the Tc
View article: Signal partitioning in superfluid ${}^4$He: a Monte Carlo approach
Signal partitioning in superfluid ${}^4$He: a Monte Carlo approach Open
Superfluid ${}^4$He is an ideal candidate for the direct detection of light dark matter via nuclear recoils thanks to its low nuclear mass and the possibility to reach a low detection energy threshold by exploiting the generated quasiparti…
View article: Development of MMC-based lithium molybdate cryogenic calorimeters for AMoRE-II
Development of MMC-based lithium molybdate cryogenic calorimeters for AMoRE-II Open
The AMoRE collaboration searches for neutrinoless double beta decay of $^{100}$Mo using molybdate scintillating crystals via low temperature thermal calorimetric detection. The early phases of the experiment, AMoRE-pilot and AMoRE-I, have …
View article: Anodization-free fabrication process for high-quality cross-type Josephson tunnel junctions based on a Nb/Al-AlO<sub> x </sub>/Nb trilayer
Anodization-free fabrication process for high-quality cross-type Josephson tunnel junctions based on a Nb/Al-AlO<sub> x </sub>/Nb trilayer Open
Josephson tunnel junctions form the basis for various superconductor electronic devices. For this reason, enormous efforts are routinely taken to establish and later on maintain a scalable and reproducible wafer-scale manufacturing process…
View article: Improved limit on neutrinoless double beta decay of $^{100}$Mo from AMoRE-I
Improved limit on neutrinoless double beta decay of $^{100}$Mo from AMoRE-I Open
AMoRE searches for the signature of neutrinoless double beta decay of $^{100}$Mo with a 100 kg sample of enriched $^{100}$Mo. Scintillating molybdate crystals coupled with a metallic magnetic calorimeter operate at milli-Kelvin temperature…
View article: Quantum Electrodynamics in Strong Electromagnetic Fields: Substate Resolved K$α$ Transition Energies in Helium-like Uranium
Quantum Electrodynamics in Strong Electromagnetic Fields: Substate Resolved K$α$ Transition Energies in Helium-like Uranium Open
Using novel metallic magnetic calorimeter detectors at the CRYRING@ESR, we recorded X-ray spectra of stored and electron cooled helium-like uranium (U$^{90+}$) with an unmatched spectral resolution of close to 90 eV. This allowed for an ac…
View article: Projected background and sensitivity of AMoRE-II
Projected background and sensitivity of AMoRE-II Open
AMoRE-II aims to search for neutrinoless double beta decay with an array of 423 Li$_2$$^{100}$MoO$_4$ crystals operating in the cryogenic system as the main phase of the Advanced Molybdenum-based Rare process Experiment (AMoRE). AMoRE has …
View article: Radioassay of the materials for AMoRE-II experiment
Radioassay of the materials for AMoRE-II experiment Open
The AMoRE-II experiment will search for the 0 νββ decay of 100 Mo nuclei using molybdate crystal scintillators, operating at milli-Kelvin (mK) temperatures, with a total of 80 kg of 100 Mo. The background goal for the experiment is 10 –4 c…
View article: MMC Array to Study X-Ray Transitions in Muonic Atoms
MMC Array to Study X-Ray Transitions in Muonic Atoms Open
The QUARTET collaboration aims to significantly improve the precision of the absolute nuclear charge radii of light nuclei from Li to Ne by using an array of metallic magnetic calorimeters to perform high-precision X-ray spectroscopy of lo…
View article: Penning-trap measurement of the Q value of electron capture in 163Ho for the determination of the electron neutrino mass
Penning-trap measurement of the Q value of electron capture in 163Ho for the determination of the electron neutrino mass Open
The investigation of the absolute scale of the effective neutrino mass remains challenging due to the exclusively weak interaction of neutrinos with all known particles in the standard model of particle physics. At present, the most precis…
View article: Application of a metallic-magnetic calorimeter for high-resolution x-ray spectroscopy of Fe at an EBIT
Application of a metallic-magnetic calorimeter for high-resolution x-ray spectroscopy of Fe at an EBIT Open
In this work, we present an experiment conducted at the S-EBIT-I ion trap of GSI. It involved the study of ion-electron collisions of Fe and Ba ions in various charge states with the electron beam. Characteristic x-ray radiation emitted du…
View article: Anodization-free fabrication process for high-quality cross-type Josephson tunnel junctions based on a Nb/Al-AlO$_x$/Nb trilayer
Anodization-free fabrication process for high-quality cross-type Josephson tunnel junctions based on a Nb/Al-AlO$_x$/Nb trilayer Open
Josephson tunnel junctions form the basis for various superconducting electronic devices. For this reason, enormous efforts are routinely taken to establish and later on maintain a scalable and reproducible wafer-scale manufacturing proces…
View article: Penning-trap measurement of the $Q$-value of the electron capture in $^{163}\mathrm{Ho}$ for the determination of the electron neutrino mass
Penning-trap measurement of the $Q$-value of the electron capture in $^{163}\mathrm{Ho}$ for the determination of the electron neutrino mass Open
The investigation of the absolute scale of the effective neutrino mass remains challenging due to the exclusively weak interaction of neutrinos with all known particles in the standard model of particle physics. Currently, the most precise…
View article: Magnetic microcalorimeter with paramagnetic temperature sensors and integrated dc-SQUID readout for high-resolution x-ray emission spectroscopy
Magnetic microcalorimeter with paramagnetic temperature sensors and integrated dc-SQUID readout for high-resolution x-ray emission spectroscopy Open
We present two variants of a magnetic microcalorimeter with paramagnetic temperature sensors and integrated dc-superconducting quantum interference device readout for high-resolution x-ray emission spectroscopy. Each variant employs two ov…
View article: Background study of the AMoRE-pilot experiment
Background study of the AMoRE-pilot experiment Open
We report a study on the background of the Advanced Molybdenum-Based Rare process Experiment (AMoRE), a search for neutrinoless double beta decay (\znbb) of $^{100}$Mo. The pilot stage of the experiment was conducted using $\sim$1.9 kg of …
View article: MMC Array to Study X-ray Transitions in Muonic Atoms
MMC Array to Study X-ray Transitions in Muonic Atoms Open
The QUARTET collaboration aims to significantly improve the precision of the absolute nuclear charge radii of light nuclei from Li to Ne by using an array of metallic magnetic calorimeters to perform high-precision X-ray spectroscopy of lo…
View article: Magnetic microcalorimeter with paramagnetic temperature sensors and integrated dc-SQUID readout for high-resolution X-ray emission spectroscopy
Magnetic microcalorimeter with paramagnetic temperature sensors and integrated dc-SQUID readout for high-resolution X-ray emission spectroscopy Open
We present two variants of a magnetic microcalorimeter with paramagnetic temperature sensors and integrated dc-SQUID readout for high-resolution X-ray emission spectroscopy. Each variant employs two overhanging gold absorbers with a sensit…
View article: High precision measurement of the $^{99}$Tc $β$ spectrum
High precision measurement of the $^{99}$Tc $β$ spectrum Open
Highly precise measurements of the $^{99}$Tc beta spectrum were performed in two laboratories using metallic magnetic calorimeters. Independent sample preparations, evaluation methods and analyses yield consistent results and the spectrum …
View article: Measuring magnetic 1/f noise in superconducting microstructures and the fluctuation-dissipation theorem
Measuring magnetic 1/f noise in superconducting microstructures and the fluctuation-dissipation theorem Open
The performance of superconducting devices like qubits, superconducting quantum interference devices (SQUIDs), and particle detectors is often limited by finite coherence times and noise. Various types of slow fluctuators in the Josep…
View article: DELight: A Direct search Experiment for Light dark matter with superfluid helium
DELight: A Direct search Experiment for Light dark matter with superfluid helium Open
To reach ultra-low detection thresholds necessary to probe unprecedentedly low Dark Matter masses, target material alternatives and novel detector designs are essential. One such target material is superfluid ^4 He which has the potenti…
View article: High-resolution X-ray emission study for Xe$$^{54+}$$ on Xe collisions
High-resolution X-ray emission study for Xe$$^{54+}$$ on Xe collisions Open
We report on an experiment conducted at the ESR storage ring aiming at the study of the X-ray emission of $$\text {Xe}^{54+}$$ ions colliding with Xe atoms at a beam energy of 50 MeV/u. The radiation resulting from the ion–atom inter…
View article: Measuring Magnetic 1/f Noise in Superconducting Microstructures and the Fluctuation-Dissipation Theorem - Data
Measuring Magnetic 1/f Noise in Superconducting Microstructures and the Fluctuation-Dissipation Theorem - Data Open
Figures and corresponding data associated with the manuscript 'Measuring Magnetic 1/f Noise in Superconducting Microstructures and the Fluctuation-Dissipation Theorem' by Herbst et al.
View article: Measuring Magnetic 1/f Noise in Superconducting Microstructures and the Fluctuation-Dissipation Theorem - Data
Measuring Magnetic 1/f Noise in Superconducting Microstructures and the Fluctuation-Dissipation Theorem - Data Open
Figures and corresponding data associated with the manuscript 'Measuring Magnetic 1/f Noise in Superconducting Microstructures and the Fluctuation-Dissipation Theorem' by Herbst et al.