A closer look at a gamma-ray burst: a study of gamma rays produced when stars collapse or collide reveals details of the explosion mechanism, particularly the role of magnetic fields.(ASTRONOMY)Gamma-ray bursts are among the most intriguing astrophysical events. Although short-lived, these ...
The temporal variability of the gamma-rays signal provide us with the best indirect evidence on the nature of the "internal engine" that powers the GRBs and accelerates the relativistic ejecta, suggesting accretion of a massive disk onto a newborn black hole: GRBs are the birth cries of ...
10a). Plastic scintillators first absorb the energy from external ionizing radiation (e.g., gamma rays, charged particles), and then promote the molecules within the plastic scintillator to higher energy states. These excited molecules are generally unstable and quickly return to lower but ...
Beta-decay is one of the three main types of radioactive decay, the other two being alpha decay, and gamma decay. This type of decay is characterized by the emission of beta rays. Beta rays are nothing but a collection of fast moving beta pa...
Unstable Nucleus- Spontaneously decay into radioactive particles ParticleMassChargeSymbol Penetrating power Alpha4 Amu2 + He α Low Beta0 amu1- e β moderate Positron0 amu 1 + e moderate Gamma0 amunone γ high Radioactive Particles You can determine which particles are given off in some cases...
like creation of new particles on the neutrinos level or radiations emitted by the neutrinos (like X rays or ? ...) ? do you know if there is an experiment that has already shown this ? Could we imagine another theory that will tend to reduce this huge energy seen ...
and brighter. The blue shift of the incoming light turns it into gamma rays. So, right before you pass through the event horizon, you’ll get nuked with a universe’s lifetime worth of starlight and microwave background radiation turned into nuking nastiness. The event horizon itself is onl...
s also the reflection of the light being emitted from the cells of your bloodstream. Since humans migrate outside of the borders of their mtDNA haplotype the circadian mismatch that is possible are endless. This has created the perfect storm for modern disease generation. If your skin is ...
The positron combines with an electron and the two opposite charges annihilate each other and produce two gamma rays (annihilation photons) each one 511 keV emitted in opposite directions at approximately 180 degrees from each other [36]. Fluorine 18 (18F) is produced in a cyclotron by bombardi...
The main difference between SPECT and PET is the type of radioactive tracer used: while SPECT is based on gamma rays, the decay of the tracers used in PET generates infinitesimal particles known as positrons which decay into two photons emitted in opposite directions. In SPECT, only the direc...