by John Carl Villanueva on July 23, 2009. An alpha particle is a particle made up of two protons and two neutrons. Since this configuration is similar to that of a helium nucleus, itâs often referred to as a helium nucleus.The term is commonly used in nuclear physics, and is one of the three particles commonly emitted during a radioactive decay, i.e., alpha, beta, and gamma particles.ince this configuration is similar to that of a helium nucleus, itâs often referred to as a helium nucleus. The term is commonly used in nuclear physics, and is one of the three particles commonly emitted during a radioactive decay, i.e., alpha, beta, and gamma particles.
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Oregon-Location, size, and extent. Located on the Pacific coast of the northwestern US. Oregon ranks 10th in size among the 50 states. The total area of Oregon is 97,073 sq mi (251,419 sq km), with land comprising 96,184 sq mi (249,117 sq km) and inland water 889 sq mi (2,302 sq km).Oregon extends 395 mi (636 km) E-W; the state's maximum N-S extension is 295 mi (475 km).he total area of Oregon is 97,073 sq mi (251,419 sq km), with land comprising 96,184 sq mi (249,117 sq km) and inland water 889 sq mi (2,302 sq km). Oregon extends 395 mi (636 km) E-W; the state's maximum N-S extension is 295 mi (475 km).