质子束 meaning in English
proton beam
Examples
- What we call a " proton beam " is in fact a succession of squeezed groups of protons called " bunches " . the two lhc beams will consist each of 2835 bunches of 1011 particles each
我们所说的“质子束”实际上是连续的许多被压缩的质子群。这两个lhc的粒子束会有2853个含有1001个粒子的群组成。 - But up to now , there is no direct experimental measurement result about the reduced transition probability of the first excitation state of 64cu and only one experiment which had measured the lifetime of low - lying excitation state of 64cu
但直到现在，有关‘ ll第一激发态ba ）值无直接的实验测量结果，仅有一个实验测量了刷cll第一激发态的能级寿命，该实验通过‘ i … ， ny ）反应布居‘ u的激发态，通过脉冲质子束流（脉冲宽度0 - The calculated results show that , for low energy protons ( energy less than several decade mev ) , the contribution of proton nuclear reaction to energy deposition can be neglected ; while for high energy protons ( energy greater than several hundred mev ) , the great difference appears for the above two cases . this gives us an indication that the contribution of proton nuclear reaction to the energy deposition must be concerned for high - energy protons . the propagation process in material of thermal shock wave induced by high - energy intense - current pulsed proton beam irradiation is calculated for several different proton energies
对于入射能注量为418 ( j cm ~ 2 )脉冲宽度为0 . 1 s的矩形脉冲强流质子束，计算结果表明，由于质子束能量不同，引起的初始热激波( 0 . 1 s时刻的热激波)有单峰结构，也有双峰结构，不同能量的强流质子束引起的热激波在传播的过程中都会出现明显的弹性前驱波。 - In the calculation , the energy deposited in aluminum by proton beams is first calculated by m - c simulation , then a 1 - d elastic - plastic fluid model is used to simulate the following thermal shock wave process as a result of thermal - mechanical effect by proton irradiation . the shape of proton is taken as a rectangle pulse with a width of 0 . 1 microseconds , the energy flux o
对于3mm的铝材料，入射粒子束为矩形脉冲(脉宽为0 . 1 s )的情况下，计算得到了电子束、质子束辐照引起铝材料断裂的能注量阈值与入射电子束、质子束能量的关系曲线，该曲线存在最小值，分别对应6mev的质子束的34 . 7j cm ~ 2和0 . 35mev电子束的42 . 1j cm ~ 2 。 - The calculated results are compared with those given by - literatures , good agreements are achieved . in the calculation of radiation shielding and single event upset ( seu ) , several mono - energy proton beams have been considered . the energy depositions in materiel by protons are calculated and compared for two cases with or without taking proton nuclear reactions into account
对于不同能量的单能质子束，计算比较了核反应对能量沉积的影响，计算结果表明，在低能质子入射情况下(能量在几十mev ) ，可以不考虑核反应对质子能量沉积的影响，而在入射质子能量达到几百mev时，核反应对质子能量沉积的影响不可忽视。