Determination of Cross Section for the Photo-Disintegration of Deuteron
Determination of Cross Section for the Photo-Disintegration of Deuteron
复制标题
氘核光分解截面的确定
DOI：
10.1143/jpsj.4.77
复制
发表时间：
1949
影响因子：
1.7
通讯作者：
S. Morita
中科院分区：
文献类型：
--
作者：
K. Shinohara;T. Okada;S. Morita
几位作者已经测量了氘原子的光解截面。在他们的开创性工作中，查德威克和戈德哈伯尔)使用了一个电离室，该电离室由氚fi发光，并连接到一个线性放大器fiEr。他们探测到2.6兆电子伏伽马射线产生的光质子，粗略估计其截面积为5×10~(-28)厘米~2，精确度为2。Richardson和Emofl)利用云室获得了3.0 MeV伽马射线锋面Na“的截面积为11×10~2 cm~2，精确度为2。由于所用伽马射线强度的不确定性，在后一个实验中不可能得到准确的截面值。最后，哈尔班(3)使用了计算光中子的方法，这些光中子是在一个大水箱的中心由伽马产生的，并被周围的水减慢了速度。他得到了(10i0)的值。8)>；<；1()-28 CMZ。他的测量可能是上面提到的三个中最准确的，但尽管如此，还是有
The cross section for the photo—disintegration of deuteron has been measured by several authors. In their pioneer work, Chadwick, and Goldhaberll) used an ionization chamber which is filled with deuterium and connected to a linear amplifier. They detected the, photo-protons produced by the 2.6 Mev gamma—rays emitted fromiThC” and rOug’hly esti—mated the value of the cross section as 5x 10 “28 cm2, with an accuracy of the factor of 2. Richardson and Emofl) used a cloud chamber and obtained 11x 10~ 28 cm2 as the value of the cross section for the 3.0 Mev gamma-rays emitted frond Na “, with an accuracy of the factor of 2. Because of the uncertainty in the intensity of the gamma-rays used, it was not possible to get an accurate value of the cross section, in the latter experiment. Fin-ally, Halban (3) used the method of counting the photo-neutrons, which are produced by the gammarays of ThC”, at the centre of a large water tank and slowed down by the surrounding water. He obtained the value of (10i0. 8)>< 1 ()-28 cmz. His measurement is probably the most accurate of the three mentioned above, but; nevertheless, there is