Continuous measurement of the arrival times of x-ray photon sequence

Yan, Qiurong; Zhao, Baosheng; Sheng, Lizhi; Liu, Yong'an
May 2011
Review of Scientific Instruments;May2011, Vol. 82 Issue 5, p053105
Academic Journal
In order to record x-ray pulse profile for x-ray pulsar-based navigation and timing, this paper presents a continuous, high-precision method for measuring arrival times of photon sequence with a common starting point. In this method, a high stability atomic clock is counted to measure the coarse time of arrival photon. A high resolution time-to-digital converter is used to measure the fine time of arrival photon. The coarse times and the fine times are recorded continuously and then transferred to computer memory by way of memory switch. The pulse profile is obtained by a special data processing method. A special circuit was developed and a low-level x-ray pulse profile measurement experiment system was setup. The arrival times of x-ray photon sequence can be consecutively recorded with a time resolution of 500 ps and the profile of x-ray pulse was constructed. The data also can be used for analysis by many other methods, such as statistical distribution of photon events per time interval, statistical distribution of time interval between two photon events, photon counting histogram, autocorrelation and higher order autocorrelation.


Related Articles

  • Spin frequency distributions of binary millisecond pulsars. Papitto, A.; Torres, D. F.; Rea, N.; Tauris, T. M. // Astronomy & Astrophysics / Astronomie et Astrophysique;Jun2014, Vol. 566, p1 

    Rotation-powered millisecond radio pulsars have been spun up to their present spin period by a 108-109 yr long X-ray-bright phase of accretion of matter and angular momentum in a low-to-intermediate mass binary system. Recently, the discovery of transitional pulsars that alternate cyclically...

  • Efficient Estimation of Agricultural Time Series Models with Nonnormal Dependent Variables. Ram�rez, Octavio A.; Misra, Sukant K.; Nelson, Jeanne // American Journal of Agricultural Economics;Nov2003, Vol. 85 Issue 4, p1029 

    This article proposes using an expanded form of the Johnson SU family as a way to approximate nonnormal distributions in regression models. The distribution is one of the few that allows modeling heteroskedasticity and autocorrelation. The technique is evaluated with Monte Carlo simulation and...

  • Determination of the differential structure factor of liquid bromobenzene by anomalous x-ray scattering. Schultz, E.; Bertagnolli, H.; Frahm, R. // Journal of Chemical Physics;1/1/1990, Vol. 92 Issue 1, p667 

    Liquid bromobenzene (C6H5Br) has been studied with differential anomalous scattering to determine the differential structure factor of the Br atoms. The experiments were carried out at beam line W1 at the Hamburger Synchrotronlaboratorium (HASYLAB). The differential structure factor was checked...

  • Identification of the spatial-temporal distribution pattern of swordfish (Xiphias gladius) in the southeastern Pacific. Espíndola, Fernando; Vega, Rodrigo; Yáñez, Eleuterio // Latin American Journal of Aquatic Research;2009, Vol. 37 Issue 1, p43 

    The pattern of the spatial-temporal distribution of the fishing yields (catch rates) of swordfish (Xiphias gladius) from the Chilean industrial longline fleet it was determined using generalized additives models, autocorrelation analysis and Fourier spectral analysis. The basic information came...

  • Spatiotemporal Nature of Scattered Laser Light and its Application. Ekuma, E. C. // Research Journal of Physics;2007, Vol. 1 Issue 1, p60 

    The fluctuations of laser light by inhomogeneous surfaces have been investigated in the light of two scattering models. The discrete random walk-and the phase screen-models. By assuming a complex Gaussian field distribution, the filed autocorrelation functions are found to be space and time...

  • WALSH-HADAMARD RANDOMNESS TEST AND NEW METHODS OF TEST RESULTS INTEGRATION. Oprina, Drei-George; Popescu, Adrian; Simion, Emil; Simion, Gheorghe // Bulletin of the Transilvania University of Brasov, Series III: M;2009, Vol. 2 Issue 51, p93 

    We present a new statistical randomness test based on Walsh-Hadamard transform. This test is a extension of frequency and autocorrelation tests and can detect a general class of defects which can appear in (pseudo)random generators. The test is based on the probability distribution of the...

  • CDF.  // Encyclopedia of Operations Research & Management Science;2001, p79 

    The article cites the meaning of the acronym CDF, which is cumulative distribution function.

  • Study of photons reflection on rough surface. Guohua, G. U.; Kou Songfeng; Sui Xiubao; Chen Qian // Optical & Quantum Electronics;Apr2009, Vol. 41 Issue 6, p453 

    The purpose of this paper is to study the probability distribution of photon reflection on rough surface experimentally and theoretically. We showed experimentally that for photon reflection on rough surface, the distribution was characterized by the ratio t/s, which was defined as the...

  • Application of a sine transform method to experiments of single-photon-decay spectroscopy: Single exponential decay signals. López, R. J.; González, F.; Moreno, F. // Review of Scientific Instruments;Jun92, Vol. 63 Issue 6, p3268 

    In this article we present as an experiment in single-photon-decay spectroscopy an alternative method to that based on the measurement of the probability distribution function, Pf(t), of the time intervals for the time of arrival of the first photon after the excitation pulse. We propose the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics