Alpha decay is the only way in which an atom will spontaneously lose protons. An alpha particle consists of two protons and two neutrons. It is essentially the nucleus of a helium atom. After an atom undergoes an alpha emission, it has two fewer protons and becomes an atom of a different...
the value of m/q for an alpha particle is thousands of times greater than that of an electron or positron 相关知识点: 试题来源: 解析 这个就是数据阿阿尔法粒子质量是6.64×10^-27kg,带电量为2个e电子质量是9.109×10^-31kg,带电量1个e所以两者的m/q差3700倍左右 ...
The alpha-particle model is generalized to include the effects of rotational-particle coupling which mixes bands and a procedure to take into account the effect of the exclusion principle between the nucleons in the alpha particles and those outside the alpha particles. The latter nucleons are ...
(accept ma=mat or pa=p) alpha particle andnucleus move in opposite directions Mass of alphaparticle OrThe nucleus and alpha particle exert an equal but opposite force oneach other.Mass of alpha particle Acceleration of nucleus Force/acceleration acts for same time so Av for nucleus is smaller...
The modeling of the steady-state fusion-born alpha particle distribution in a mirror loss-cone is investigated. The Legendre function expansion and diffusion-front methods are reviewed and examined. The diffusion-front method is shown to be an accurate and efficient method for alpha-loss-cone insta...
The alpha particle has a high electrical charge but a low velocity due to its large mass, and interactions are frequent. These interactions are with the loosely bound, outer electrons of the atoms in the material and should not be considered collisions. Since the particle is positively charged,...
百度试题 结果1 题目 A5.0-MeValphaparticleapproachesagoldnucleuswithanimpactparameterof2.6×10-13m.Throughwhatanglewillitbescattered?() 相关知识点: 试题来源: 解析 10° 反馈 收藏
The inventive viral particle consists of structural elements not originally from an alpha-virus and containing an alpha-virus derived vector deactivated for replication, by means of deletion or substitution by at least one transgene. Said particle also consisting of structural genes and is characterised...
This paper is concerned with measurements and Monte Carlo calculations of ionisation distributions produced in a site of about 20 nm by a Cm alpha particle 展开 关键词:sexual risk taking Taiwan youth DOI: 10.1093/oxfordjournals.rpd.a006801 被引量: 32 ...
Li nuclei in the energy range from 8 to 50 MeV were analyzed within the approach of coupled reaction channels. The coupling of elastic scattering and inelastic scattering accompanied by the transition to the 3 state at x = 2.186 MeV and the mechanism involving the exchange of an alpha-particl...