Energy of a muonic X-ray transition measured with a crystal spectrometer

Eichler, Robert; Aas, B.; Beer, W.; Beltrami, I.; Ebersold, P.; Ledebur, Th.v.; Leisi, H.J.; Sapp, W.W.; Dousse, J.-Cl.; Kern, J.; Schwitz, W.

doi:10.1016/0370-2693(78)90283-6

Cited by 14 publications

(3 citation statements)

References 9 publications

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“…We also experimentally confirmed full ionization of µNe from the 7-5 transition peak, which was possible thanks to the broadband feature of the TES detector. We obtained, for the first time, the QED vacuum polarization contribution to this transition with an accuracy of 5.8%, for the fully ionized exotic hydrogenlike two-body system under such low-pressure conditions free from both the effect of the FNS (∼ 0.01% relative to the VP contribution) and the K-shell electron shift, while previous reports on BSQED tests by muonic atoms in solids have not satisfied these conditions [45][46][47][48]. Thus, the present measurement is regarded to be a significant milestone for strong-field BSQED tests.…”

mentioning

confidence: 85%

Proof-of-Principle Experiment for Testing Strong-Field Quantum Electrodynamics with Exotic Atoms: High Precision X-Ray Spectroscopy of Muonic Neon

Okumura¹,

Azuma²,

Bennett³

et al. 2023

Phys. Rev. Lett.

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de

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mentioning

confidence: 85%

Proof-of-Principle Experiment for Testing Strong-Field Quantum Electrodynamics with Exotic Atoms: High Precision X-Ray Spectroscopy of Muonic Neon

Okumura¹,

Azuma²,

Bennett³

et al. 2023

Phys. Rev. Lett.

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“…Since the first DuMond spectrometer 20 was developed, many devices based on this geometry have been constructed. DuMond spectrometers were used to measure the γ-rays produced in nuclear reactions 29,30 as well as the X-rays emitted as a result of the radiative Auger effect, 31 the multiple inner-shell ionization, 32 the radiative decay of mesonic, 33,34 muonic 35,36 atoms, and of highly charged high-Z ions. 37 Transmission-type spectrometers were also used at SR facilities to study Compton scattering with high energy resolution.…”

Section: Introductionmentioning

confidence: 99%

A DuMond-type crystal spectrometer for synchrotron-based X-ray emission studies in the energy range of 15–26 keV

Jagodziński

Szlachetko

Dousse

et al. 2019

Review of Scientific Instruments

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The design and performance of a high-resolution transmission-type X-ray spectrometer for use in the 15-26 keV energy range at synchrotron light sources is reported. Monte Carlo X-ray-tracing simulations were performed to optimize the performance of the transmission-type spectrometer, based on the DuMond geometry, for use at the Super X-ray absorption beamline of the Swiss Light Source at the Paul Scherrer Institute. This spectrometer provides an instrumental energy resolution of 3.5 eV for X-ray emission lines around 16 keV and 12.5 eV for emission lines at 26 keV, which is comparable to the natural linewidths of the K and L X-ray transitions in the covered energy range. First experimental data are presented and compared with results of the Monte Carlo X-ray simulations.1

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“…In most of them the radiation source was no longer a γ -ray radioactive source as used by DuMond but a solid, liquid, or gaseous sample placed in the beam line of a nuclear reactor or particle accelerator. Laue-type crystal spectrometers have been installed at nuclear reactors for, e.g., high-resolution n-γ spectroscopy experiments 17 and at particle accelerators for the study of, e.g., (α, xnγ ) nuclear reactions, 18 heavy-ion induced multiple atomic innershell ionization, [19][20][21] or X-rays from muonic 22 and pionic atoms. 23 More recently, the advent of third generation synchrotron radiation (SR) facilities and X-ray free electron laser (XFEL) sources have given a new boost to the domain and many XES (X-ray emission spectroscopy) and RIXS (resonant inelastic X-ray scattering) experiments have been carried out at such facilities using crystal spectrometers.…”

Section: Introductionmentioning

confidence: 99%

High-resolution Laue-type DuMond curved crystal spectrometer

Szlachetko

Berset

Dousse

et al. 2013

Review of Scientific Instruments

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We report on a high-resolution transmission-type curved crystal spectrometer based on the modified DuMond slit geometry. The spectrometer was developed at the University of Fribourg for the study of photoinduced X-ray spectra. K and L X-ray transitions with energies above about 10 keV can be measured with an instrumental resolution comparable to their natural linewidths. Construction details and operational characteristics of the spectrometer are presented. The variation of the energy resolution as a function of the focal distance and diffraction order is discussed. The high sensitivity of the spectrometer is demonstrated via the 2s-1s dipole-forbidden X-ray transition of Gd which could be observed despite its extremely low intensity. The precision of the instrument is illustrated by comparing the sum of the energies of the Au K-L 2 and L 2 -M 3 cascading transitions with the energy of the crossover K-M 3 transition as well as by considering the energy differences of the Gd Kα 1 X-ray line measured at five different diffraction orders. Finally, to demonstrate the versatility of the spectrometer, it is shown that the latter can also be used for in-house extended X-ray absorption fine structure measurements.

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Energy of a muonic X-ray transition measured with a crystal spectrometer

Cited by 14 publications

References 9 publications

Proof-of-Principle Experiment for Testing Strong-Field Quantum Electrodynamics with Exotic Atoms: High Precision X-Ray Spectroscopy of Muonic Neon

Proof-of-Principle Experiment for Testing Strong-Field Quantum Electrodynamics with Exotic Atoms: High Precision X-Ray Spectroscopy of Muonic Neon

A DuMond-type crystal spectrometer for synchrotron-based X-ray emission studies in the energy range of 15–26 keV

High-resolution Laue-type DuMond curved crystal spectrometer

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