摘要
A series of deuterated ammonium dihydrogen phosphate(DADP) crystals were grown and their structures were investigated by using powder neutron diffraction method. In the entire composition range, the deuterated level in the crystals is lower compared with the aqueous growth solution. The deuterium segregation coefficient in the crystals decreases with increasing deuterium content of the solution. The deuterium content in the NH_4^+ group is higher than that in H_2PO_4^- group.In addition, the variations of lattice parameters are shown here.
A series of deuterated ammonium dihydrogen phosphate(DADP) crystals were grown and their structures were investigated by using powder neutron diffraction method. In the entire composition range, the deuterated level in the crystals is lower compared with the aqueous growth solution. The deuterium segregation coefficient in the crystals decreases with increasing deuterium content of the solution. The deuterium content in the NH_4^+ group is higher than that in H_2PO_4^- group.In addition, the variations of lattice parameters are shown here.
基金
Project supported by the National Natural Science Foundation of China(Grant No.51402173)
Shandong Provincial Natural Science Joint Foundation with Universities and Scientific Research Institution,China(Grant No.ZR2017LEM006)
the Neutron Physics Laboratory,China Academy of Engineering Physics(Grant No.2014BB07)
the Fundamental Research Funds for Central Universities,China(Grant No.FRF-TP-15-099A1)
