Photon–photon coincidence apparatus with position sensitive detectors

Reiß, Philipp; Schmidt, Ph.; Tulin, I.; Knie, André; Hentges, Rainer; Ehresmann, A.

doi:10.1016/j.nima.2014.11.108

Cited by 3 publications

(4 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These challanges can be overcome according to the relation given in equation 1, if collecting optics are used to increase the solid angle of photon detection and with that increase the coincidence count rate as described in Ref. 20 for photon-photon and in Ref. 21 for ion-photon coincidence experiments.…”

Section: Introductionmentioning

confidence: 99%

Setup for multicoincidence experiments of photons in the extreme ultraviolet to visible spectral range and charged particles—The solid angle maximization approach

Hans

Ozga

Schmidt

et al. 2019

Review of Scientific Instruments

Self Cite

View full text Add to dashboard Cite

The coincident detection of particles is a powerful method in experimental physics, enabling the investigation of a variety of projectile-target interactions. The vast majority of coincidence experiments is performed with charged particles, as they can be guided by electric or magnetic fields to yield large detection probabilities. When a neutral species or a photon is one of the particles recorded in coincidence, its detection probability typically suffers from small solid angles. Here, we present two optical assemblies considerably enhancing the solid angle for EUV to VIS photon detection. The efficiency and versatility of these assemblies is demonstrated for electron-photon coincidence detection, where electrons and photons emerge from fundamental processes after photoexcitation of gaseous samples by synchrotron radiation. a

show abstract

Section: Introductionmentioning

confidence: 99%

Setup for multicoincidence experiments of photons in the extreme ultraviolet to visible spectral range and charged particles—The solid angle maximization approach

Hans

Ozga

Schmidt

et al. 2019

Review of Scientific Instruments

Self Cite

View full text Add to dashboard Cite

show abstract

“…Time resolved event detection also enables the application of coincidence techniques. We developed an apparatus for photon-photon coincidence experiments [ 15 ]. However, coincidence experiments using photon detection are extremely challenging, since the solid angle cannot be enlarged by applying electric and magnetic fields as for charged particles (see e.g., [ 16 , 17 ]), and reports of successful experiments are scarce [ 18 , 19 , 20 ].…”

Section: Detector Detailsmentioning

confidence: 99%

Extreme Ultraviolet to Visible Dispersed Single Photon Detection for Highly Sensitive Sensing of Fundamental Processes in Diverse Samples

et al. 2018

View full text Add to dashboard Cite

The detection of a single photon is the most sensitive method for sensing of photon emission. A common technique for single photon detection uses microchannel plate arrays combined with photocathodes and position sensitive anodes. Here, we report on the combination of such detectors with grating diffraction spectrometers, constituting a low-noise wavelength resolving photon spectroscopy apparatus with versatile applicability. We recapitulate the operation principle of such detectors and present the details of the experimental set-up, which we use to investigate fundamental mechanisms in atomic and molecular systems after excitation with tuneable synchrotron radiation. Extensions for time and polarization resolved measurements are described and examples of recent applications in current research are given.

show abstract

“…For fluorescence detection, a position-sensitive detector (see Reiß et al 2015;Hans et al 2018) was used. Therefore, not only the spectral but also the position-dependent (lateral) quantum efficiency QE lat (x, y) has to be determined.…”

Section: Appendix C Normalization and Evaluation Methods For Absolute...mentioning

confidence: 99%

“…The time resolution was determined to be 350 ps. A detailed description of the detector is given in Reiß et al (2015) and Hans et al (2018). Two metal apertures are mounted up-and downstream of the source volume of the fluorescence.…”

Section: Fluorescence and Absorption Spectroscopy With The Pifs Setup...mentioning

confidence: 99%

Vibrationally Resolved Absorption and Fluorescence Cross Sections of Adamantane in the Far-ultraviolet Spectral Range on an Absolute Scale

Marder

Breier

Oliveira

et al. 2023

ApJS

View full text Add to dashboard Cite

High-resolution absorption, dispersed fluorescence emission, and photoionization cross sections are presented for gas-phase adamantane excited by synchrotron radiation in the exciting-photon energy range of 6–30 eV. Relative and absolute absorption cross sections of so-far unmatched resolution of down to 0.27 cm−1 line width in the region from 6.4–28 eV are shown along with newly discovered vibronic substructures around the HOMO–LUMO transition. Absorption line positions are provided with very high accuracy and listed in tabular form to be used as spectral fingerprints for the detection of adamantane in interstellar media, where its column density may be determined via the absolute cross sections. The fluorescence emission lies in the ultraviolet range from 190–250 nm and is excited starting at the HOMO–LUMO transition at 6.49 eV, which corresponds to the highest fluorescence emission energy. Hitherto unreported fluorescence in the same spectral range and relative photoionization cross sections in the exciting-photon energy range up to 30 eV are also presented along with lifetime measurements for differentiation of the involved electronic states.

show abstract

Photon–photon coincidence apparatus with position sensitive detectors

Cited by 3 publications

References 13 publications

Setup for multicoincidence experiments of photons in the extreme ultraviolet to visible spectral range and charged particles—The solid angle maximization approach

Setup for multicoincidence experiments of photons in the extreme ultraviolet to visible spectral range and charged particles—The solid angle maximization approach

Extreme Ultraviolet to Visible Dispersed Single Photon Detection for Highly Sensitive Sensing of Fundamental Processes in Diverse Samples

Vibrationally Resolved Absorption and Fluorescence Cross Sections of Adamantane in the Far-ultraviolet Spectral Range on an Absolute Scale

Contact Info

Product

Resources

About