annihilation gamma quantum

An investigation on the imperfect state is made by using positron annhilation technique.

报导了以诱导共沉积的方法，制取了非晶结构的Ｎｉ－Ｐ－Ｙ合金材料；并通过正电子湮没技术对该材料的缺陷作了研究；指出缺陷是该类材料结构发生变化及性能改善的根本原因。

Special soliton structures and the phenomena of fission and annihilation of solitons for the (2+1)-dimensional Broer-Kaup system with variable coefficients;

变系数(2+1)维Broer-Kaup系统的特殊孤子结构及孤子的裂变和湮没现象

The “annihilation” of rational dioid in general way is discussed.

对有理双子的“和”运算与“积”运算的“湮没”问题作了一般性的研究，其结果在简化双子运算，揭示其有理双子的稳态部分的性质有十分广泛的应用

The changed particle multiplicity of heavy quark jet events in e+e- annihilation is calculated by the quark production rule and quark combination rule.

利用“夸克产生律”与“夸克组合律”计算了ｅ＋ｅ－湮没中重夸克喷注事例的带电粒子多重数，结果与实验符合。

Tests and analyses of the positron annihilation lifetime on annealing samples at different temperature demonstrated that point defects were mainly cadmium vacancies which were preponderant in CdSe crystal.

利用正电子湮没方法对CdSe单晶中的缺陷进行了研究,通过对不同温度下退火样品正电子湮没寿命的测试分析,表明:在CdSe晶体中存在的点缺陷主要是占优势的镉空位。

The transition densities obtained from fitting to the electron scattering data and the three annihilation potentials derived from analysis of p scattering data are used in the calculation.

在Glauber多重散射理论框架下 ,使用跃迁密度方法和 3种 NN湮没势 ,计算了入射动量为6 0 0MeV c的反质子在12 C上的非弹性散射微分截面 。

The transition densities obtained from fitting to the electron scattering data and the three annihilation potentials derived from analysis of p—p scattering data are used in the calculation.

在Glauber多重散射理论框架下,使用跃迁密度方法和三种N-N湮没势,计算了46·8MeV的反质子在~(12)C上的非弹性散射微分截面。