scholarly journals RESEARCH ON THE PROPERTIES OF SORBENTS AND DECONTAMINANTS IN THE PROCESSES WITH SMALL ISOTOPE EFFECTS

2021 ◽  
pp. 191-196
Author(s):  
V.V. Levenets ◽  
A.Yu. Lonin ◽  
O.P. Omelnik ◽  
A.O. Shchur
Keyword(s):  
Stable Isotope ◽  
Proton Beam ◽  
Gamma Ray ◽  
Isotope Effects ◽  
Radioactive Source ◽  
Performance Characteristics ◽  
Element Content ◽  
X Ray ◽  
Gamma Ray Emission ◽  
Efficiency Determination

The low values of isotope effects in the sorption/decontamination processes make it possible to investigate the properties of the sorbing and decontaminating agents with the use of stable isotope simulators. In the work present-ed here the element content was determined from the characteristic X-ray emission induced by the proton beam (PIXE), by gamma-ray emission from the radioactive source, and by emission from the X-ray tube. Based on the results of efficiency determination for different kinds of sorbents and decontaminants, recommendations have been given for the choice of materials having the wanted performance characteristics.

A Combined Model for the X‐Ray to Gamma‐Ray Emission of Cygnus X‐1

1998 ◽  
Vol 502 (1) ◽  
pp. 428-436 ◽  
Author(s):  
Igor V. Moskalenko ◽  
Werner Collmar ◽  
Volker Schonfelder
Keyword(s):  
Gamma Ray ◽  
Combined Model ◽  
X Ray ◽  
Gamma Ray Emission

Erratum: Study of gamma-ray emission by proton beam interaction with injected Boron atoms for future medical imaging applications

2017 ◽  
Vol 12 (04) ◽  
pp. E04001-E04001
Author(s):  
G Petringa ◽  
G.A.P Cirrone ◽  
C Caliri ◽  
G Cuttone ◽  
L Giuffrida ◽  
...  
Keyword(s):  
Medical Imaging ◽  
Proton Beam ◽  
Gamma Ray ◽  
Beam Interaction ◽  
Gamma Ray Emission

Sigma upper limits to the hard X-ray/soft gamma-ray emission from the millisecond pulsars of the nearby globular cluster 47 Tucunae

1993 ◽  
Vol 405 ◽  
pp. L59 ◽  
Author(s):  
D. Barret ◽  
P. Mandrou ◽  
M. Denis ◽  
J. F. Olive ◽  
P. Laurent ◽  
...  
Keyword(s):  
Globular Cluster ◽  
Gamma Ray ◽  
Millisecond Pulsars ◽  
X Ray ◽  
Upper Limits ◽  
Gamma Ray Emission

LONG-TERM MONITORING OF THE HARD X-RAY/GAMMA-RAY EMISSION FROM GALACTIC BLACK HOLES WITH BATSE

2008 ◽  
Author(s):  
G. L. CASE ◽  
E. ANZALONE ◽  
M.L. CHERRY ◽  
J. C. RODI ◽  
J. C. LING ◽  
...  
Keyword(s):  
Black Holes ◽  
Gamma Ray ◽  
X Ray ◽  
Long Term Monitoring ◽  
Gamma Ray Emission ◽  
Term Monitoring

scholarly journals X-ray and Gamma-ray Variability of NGC 1275

Galaxies ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 63
Author(s):  
Varsha Chitnis ◽  
Amit Shukla ◽  
K. P. Singh ◽  
Jayashree Roy ◽  
Sudip Bhattacharyya ◽  
...  
Keyword(s):  
Time Scales ◽  
Gamma Ray ◽  
Radio Galaxy ◽  
Cluster Emission ◽  
X Ray ◽  
Gamma Ray Emission ◽  
High Degree ◽  
Ngc 1275 ◽  
Perseus Cluster ◽  
Very High

Gamma-ray emission from the bright radio source 3C 84, associated with the Perseus cluster, is ascribed to the radio galaxy NGC 1275 residing at the centre of the cluster. Study of the correlated X-ray/gamma-ray emission from this active galaxy, and investigation of the possible disk-jet connection, are hampered because the X-ray emission, particularly in the soft X-ray band (2–10 keV), is overwhelmed by the cluster emission. Here we present a method to spectrally decouple the cluster and active galactic nucleus (AGN) emission in imaging X-ray detectors. We use three sets of simultaneous Niel Gehrels Swift XRT and NuStar data. These observations were made during the period 2015 November to 2017 February, when a huge increase in the gamma-ray emission was observed. We find that the gamma-ray emission shows a very high degree of variability (40%–50%) on time scales of 1–10 days, whereas the hard X-ray emission, associated with the AGN, shows a low variability (∼15%–30%), on various time scales in the range of 0.01–60 days.

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