spallation


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Related to spallation: Spallation reaction

spallation

(spă-lay -shŏn) A particularly vigorous type of nuclear reaction in which several particles or nuclei result from a high-speed collision. Spallation occurs when cosmic rays collide at high speed with atomic nuclei, the heavier nuclei breaking up to produce lighter nuclei.

spallation

[spȯ′lā·shən]
(nuclear physics)
A nuclear reaction in which the energy of the incident particle is so high that more than two or three particles are ejected from the target nucleus and both its mass number and atomic number are changed. Also known as nuclear spallation; spallation reaction.
References in periodicals archive ?
With the target configuration set to use the cylindrically distributed spallation neutrons, as shown in Fig.
As shown in Figure 13, there was spallation at 130 mm from the side of the 30gr/ft expanding tube at around t = 0.07 ms.
One possibility would be to install a large [sup.4]He moderator close to the spallation target, as initially suggested by Golub and colleagues more than 30 years ago [6].
Sayeda Saleem, the Principal of School of International Studies in Science & Arts added, "Spallation has become a fun yet focused campaign to bring factual information to children about critical environmental issue."
New analytical tools are coming on line at the Spallation Neutron Source, the Dept.
The Office of Science's funding included $11.5 million for synchrotron and radiation light sources and $2 million for the spallation neutron source, an accelerator-based neutron source tinder construction.
Neutron spectroscopy, in particular, has become a very powerful probe of the magnetic state of atoms thanks largely to advances in instrumentation at spallation neutron sources like the ISIS Facility at the Rutherford Appleton Laboratory.
There is minimal spallation of the outer coating, requiring less maintenance on the pump.
study in neighboring Persian poetries without spallation and
The expected increased accuracy of neutron [beta]-decay experiments at the new Spallation Neutron Source could result in more stringent tests of the Standard Model.