In order to study the effects of gamma rays on mean germination time (MGT), germination percentage, survival percentage, shoot and root length and, number of branches and leaves per plant, and fresh and dry weight of Lepidium sativum L current experiment was conducted. Dry seeds of Lepidum sativum L were irradiated with 20, 30, 40, 50, 60, 70 and 80 krad (Kr) by a Co-gamma chamber at Nuclear In...

A neutron-energy dependent angular distribution was measured for individual $\gamma$-rays from the 3.2 eV $p$-wave resonance of $^{131}$Xe+$n$, that shows enhanced parity violation owing to a mixing between $s$- and amplitudes. The $\gamma$-ray transitions were identified, with respect neutron momentum evaluated as function energy 7132 keV $\gamma$-rays, which correspond transition 1807 excited...

Amongst the atmospheric muons recorded by neutrino telescopes are muons produced by the interaction of cosmic gamma rays with the Earth’s atmosphere. Although they are not numerous, it has been suggested that such muons could be distinguished by neutrino telescopes from the isotropic background by correlating their direction with known sources of gamma rays. The ANTARES neutrino telescope is ta...

Many classes of gamma-ray sources, such as gammaray bursts, blazars, Seyfert galaxies, and galactic black hole sources are surrounded by large amounts of gas and dust. X-rays and gamma-rays that traverse this material will be attenuated by Compton scattering and photoelectric absorption. One signature of an intervening scattering cloud is radiationhardening by electrons that have been scattered...

The mutagenic effect of gamma rays, ethyl methane sulphonate (EMS) and sodium Azide (SA) used either singly or in combination were observed for induced genetic variability for yield and yield traits in M and 2 M generation in the two cultivars of Basmati rice. The observation mean range and coefficient of variation (CV) 3 suggest that the mutagen treatment had wider values than the control. The...

The determination of the ‘‘ equivalent roentgen ” value for gamma rays has received the attention of a number of investigators. Such studies have not been limited to physical measurements of gamma rays. A number of research workers have measured the quantity of gamma rays which will produce the same effect as one roentgen of x-rays on a biological test object. Several types of test material hav...

to evaluate the effect of gamma rays on the seeds and amounts of nitrogen on growth and yield of chamomile (chamomilla recutita synonym matricaria chamomilla), a factorial experiment was conducted based on randomized complete block design with three replications at the research farm of agriculture college of shahid-beheshti.-urmia in 2010. treatments were gamma rays from cobalt-60 on chamomile ...