Newsletter on Gamma Ray Research: September-2018

Gamma-Rays Spewed As a Black Hole Forms Might ‘Reverse Time

As an enormous star collapses into a part, it sends out a superb SOS signal within the style of ultrabright gamma-ray bursts. Now, scientists have found one thing terribly peculiar concerning those mysterious signals: they appear to reverse time.

A new study, printed Aug. thirteen within the uranology Journal, has found that these gamma-ray bursts area unit time-reversed, which means the sensible lightweight wave is spit out a method and so sent out once more within the opposite order. [1]

PORTABLE REAL TIME IN-SITU GAMMA-RAY ANALYSIS SYSTEM

A gamma-ray analysis system is delineated  for analyzing gamma-ray emitting radionuclides. The gamma-ray Associate in Nursingalysis system includes an analytical equipment having a gamma-ray detector in operative communication with a standard and ascendable protect assembly that encases a sample instrumentality having a sample to be tested. The detector communicates knowledge to Associate in Nursing electronic interface device that converts the info from Associate in Nursing analog format to a digital format before a controller transmits the info to a central laboratory for more processing, analysis and conclusion by qualified laboratory analysts. The controller runs Associate in Nursing application computer code package on a graphic programme that enables easy steps for conducting testing and knowledge acquisition by the tip user, whereas allowing real time knowledge transmission between the sector website and therefore the central location. [2]

Search for Terrestrial Gamma-ray Flashes in AGILE data by correlation with ground-based lightning measurements

Terrestrial Gamma-ray Flashes (TGFs) ar sub-millisecond bursts of high energy photons, related to lightning flashes created within thunderstorms. The Astro-Rivelatore Gamma a Immagini Leggero (AGILE) satellite is one amongst the few satellites capable of police investigation these events. comparison gamma-ray measurements by AGILE and lightning detected by the planet Wide Lightning Location Network (WWLLN), it’s attainable to spot TGF candidates primarily based solely on time correlation between gamma-ray and lightning knowledge. This new rule isn’t biased by previous choice criteria, e.g. spectral hardness magnitude relation, and might thus realize new candidates that are unnoted before. Similar procedures have already been with success applied to knowledge from the Fermi and RHESSI satellites. [3]

Generation of Pseudo-synthetic Seismograms from Gamma-Ray Well Logs of Highly Radioactive Formations

The conventional artificial seismogram is formed with a sonic and a density log; but, the sonic log may be replaced with the electrical phenomenon, neutron, gamma-ray or spontaneous potential log to supply a pseudo-sonic (PS) log. more moderen techniques involve combining Associate in Nursing SP log and a GR log to supply a PS log. within the past, a disadvantage in mistreatment GR logs for the PS is that the presence of extremely hot and infrequently organic-rich layers possessing abnormally high GR readings. to enhance the pseudo-sonic log made from the gamma-ray log, a way was developed to statistically treat the outliers from the wells within the Hugoton Embayment that encountered preponderantly sedimentary rock, sandstone, limestone, and dolomite and whose logged sections enclosed each traditional and abnormally high GR readings. [4]

Use of Gamma Rays and Hybridization to Create New Drought Tolerant Wheat Genotypes

Selection from established high yielding pure line wheat cultivars would seldom isolate a replacement genotype. inducement new genetic variation in bread wheat populations via electromagnetic radiation irradiation and hybridizing procedures and uninflected drought tolerant genotypes from derived heterogeneous populations were the aims of this study. The M2 populations of seven irradiated wheat genotypes exhibited variations within the magnitude of constitution (PCV) and constitution (GCV) constant of variation and heritability for studied traits below water stress (WS) and well watering (WW) conditions. the very best expected gain from choice (GA) for grain yield/plant (GYPP) was shown by Sids-4 irradiated (I) and Sakha-61 (I) below well watering (WW) and Aseel-5 (I) and Sids-4 (I) below WS conditions. the anticipated GA from choice for GYPP within the F2’s of diallel crosses among six genotypes, reached a most of seventy one.6% below WS for F2 of (As-5 x Sk-93). choice for top GYPP and different fascinating traits was practiced within the M2 and F2 populations below WW and WS. [5]

Reference

[1] Gamma-Rays Spewed As a Black Hole Forms Might ‘Reverse Time

By Yasemin Saplakoglu, Staff Writer , August 23, 2018 02:41pm ET (web link)

[2] PORTABLE REAL TIME IN-SITU GAMMA-RAY ANALYSIS SYSTEM

Wei C, Garnick KM, Scott TA, Malkin EM, Szymanski JT, Laskos S, Cocks J, Ralmondi J, Mowry R, Gonzalez H, White R, inventors. PORTABLE REAL TIME IN-SITU GAMMA-RAY ANALYSIS SYSTEM. United States patent application US 15/756,667. 2018 Aug 30. (web link)

[3] Search for Terrestrial Gamma-ray Flashes in AGILE data by correlation with ground-based lightning measurements

Lindanger A. Search for Terrestrial Gamma-ray Flashes in AGILE data by correlation with ground-based lightning measurements (Master’s thesis, The University of Bergen). (web link)

[4] Generation of Pseudo-synthetic Seismograms from Gamma-Ray Well Logs of Highly Radioactive Formations

Quadir A, Lewis C, Rau RJ. Generation of Pseudo-synthetic Seismograms from Gamma-Ray Well Logs of Highly Radioactive Formations. Pure and Applied Geophysics. 2018:1-21. (web link)

[5] Use of Gamma Rays and Hybridization to Create New Drought Tolerant Wheat Genotypes

  1. M. M. Al-Naggar1*, Kh. F. Al-Azab2, S. E. S. E. Sobieh2 and M. M. M. Atta1

1Department of Agronomy, Faculty of Agriculture, Cairo University, Giza, Egypt.

2Plant Research Department, Nuclear Research Center, Atomic Energy Authority, Inshas, Egypt. (web link)

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