Lensing Magnification Seen by Gravitational Wave Detectors

In this paper, we studied the gravitational lensing of gravitational wave events. The probability that an observed gravitational wave source has been (de-)amplified by a given amount is a detector-dependent quantity which depends on different ingredients: the lens distribution, the underlying distribution of sources and the detector sensitivity. The main objective of the present work was to introduce a semi-analytic approach to study the distribution of the magnification of a given source population observed with a given detector. The advantage of this approach is that each ingredient can be individually varied and tested. We computed the expected magnification as both a function of redshift and of the observedsource luminosity distance, which is the only quantity one can access via observation in the absence of an electromagnetic counterpart. As a case study, we then focus on the LIGO/Virgo network and on strong lensing (μ>1).

On-column internal standardisation as an alternative calibration strategy for speciation analysis: feasibility demonstration through analysis of inorganic As in rice

Species-specific isotope dilution mass spectrometry (SS-IDMS) has been the calibration method of choice for high accuracy speciation analysis because it can correct for detector sensitivity drifts, matrix effects, analyte loss...

‘Range’: A gain and dynamic range independent quantification of spread aiding in panel design

In flow cytometers, ideally each detector receives photons from one specific fluorochrome. However, photons usually end up in different detectors too (fluorescence spillover). ‘Compensation’ is a process that removes this extra signal from all detectors other than the primary detector dedicated to that fluorochrome. Post ‘compensation’, the measurement error of spillover signals become evident as spreading of the data. Spillover reduces the ability to resolve single positive from double positive cell populations. For successful multi-color panel design, it is important to know the expected spillover. The Spillover Spread Matrix (SSM) can be used to estimate the spillover spread, but the outcome is heavily influenced by detector sensitivity. In short, the same single stained control sample produces different spillover spread values when detector sensitivity are altered. Many researchers unknowingly use this artifact to “reduce” the spread by decreasing detector sensitivity. This can result in reduced sensitivity and diminished capacity to resolve cell populations. In this article, we introduce ‘Range’ as an alternative tool that can predict the spillover independent of detector sensitivity. ‘Range’ is also independent of dynamic range, that allows to compare spread values between different types of instruments, something not possible using SSM.

A NEW TL-DOS NEUTRON DOSEMETER FOR MEASUREMENTS OF THE PERSONAL DOSE EQUIVALENT HP(10)

A new thermoluminescence albedo dosemeter with improved properties is developed as part of the TL-DOS project. The dosemeter measures the neutron and photon whole-body dose of radiation workers. The TL-DOS neutron dosemeter is presented and its results of well-known field measurements as well as field calibrations are shown. Its advantages, such as its potential to measure the high-linear energy transfer peaks, its improved detector sensitivity and long detector lifetime, are explained. The new dosemeter is compared to a thermoluminescence albedo dosemeter already used in routine dosimetry in Germany.