Timing measurement BOST architecture with full digital circuit and self-calibration using characteristics variation positively for fine time resolution

Author(s):  
Congbing Li ◽  
Junshan Wang ◽  
Haruo Kobayashi ◽  
Ryoji Shiota
1992 ◽  
Vol 23 (4) ◽  
pp. 245-256 ◽  
Author(s):  
Å. Spångberg ◽  
J. Niemczynowicz

The paper describes a measurement project aiming at delivering water quality data with the very fine time resolution necessary to discover deterministic elements of the complex process of pollution wash-off from an urban surface. Measurements of rainfall, runoff, turbidity, pH, conductivity and temperature with 10 sec time resolution were performed on a simple urban catchment, i.e. a single impermeable 270 m2 surface drained by one inlet. The paper presents data collection and some preliminary results.


Radiocarbon ◽  
2019 ◽  
Vol 61 (6) ◽  
pp. 1729-1740 ◽  
Author(s):  
I Svetlik ◽  
A J T Jull ◽  
M Molnár ◽  
P P Povinec ◽  
T Kolář ◽  
...  

ABSTRACTToday, accelerator mass spectrometry (AMS) technology enables us to carry out very precise measurements of radiocarbon (14C). Unfortunately, due to fluctuations in the 14C calibration curve, the resulting calibrated time intervals vary from decades up to centuries in calibrated age. Within a time scale of several decades, we can find several time intervals on the 14C calibration curve which correspond with periods of rapid increases in atmospheric 14CO2 activity. Some of these “high slope” parts of the calibration curve could be used for fine time resolution for radiocarbon dating of individual samples. Nevertheless, there are certain limitations owing to the properties of the samples measured. We have prepared a time-resolution curve for the 14C dating method, applying calibration curve IntCal13 and assuming an uncertainty of 14C analyses ±15 yr BP (for recent samples). Our curve of the time resolution covers the last 50 ka. We found several time intervals with time resolution below 50 yr BP for the last 3 ka. Several time intervals which can enable substantially better time resolution compared to neighboring parts of the calibration curve were also found for periods older than 3 ka.


Author(s):  
Haruo Kobayashi ◽  
Kosuke Machida ◽  
Yuto Sasaki ◽  
Yusuke Osawa ◽  
Pengfei Zhang ◽  
...  

1998 ◽  
Vol 11 (1) ◽  
pp. 380-380
Author(s):  
G. Cusumano ◽  
C. Maccarone ◽  
T. Mineo ◽  
A. Segreto ◽  
B. Sacco ◽  
...  

The Crab Pulsar(PSR 0531+21) was observed by the four Narrow Field Instruments on board the Italian-Dutch satellite BeppoSAX on August and September 1996, during the Science Verificado Phase. The fine time resolution (15 μs) and the high statistic of the data provided phase histogram of very good quality, well suited for phase resolved spettroscopy over the entire energy band (0.1-300 keV) covered by BeppoSAX payload. In this contribution we present preliminary results of the spectra distribution of the peaks and the inter peak region. Moreover, we also carried out a detailed analysis of the P1 shape and the behaviour of the P2/P1 ratio with the energy.


1975 ◽  
Vol 68 ◽  
pp. 233-235 ◽  
Author(s):  
Peter Hoyng ◽  
John C. Brown ◽  
Gerard Stevens ◽  
H. F. Van Beek

The Utrecht Hard Solar X-Ray Spectrometer on board the ESRO TD-1A satellite (launch March 1972) is permanently Sun-pointed and measures the solar radiation between 30 keV and 1000 keV, in 12 logarithmically spaced energy channels, with a continuous fine time resolution, viz. 1.2 s for the four lowest energy channels and 4.8 s for the rest. The detector has a 5 cm2 Cs I (Na) crystal; counts due to particles are rejected and even during the largest solar flares saturation effects (e.g. pulse pile-up) are absent. For further details see Van Beek (1973), and Van Beek and De Feiter (1973).


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