论文标题
Radiopure Znwo $ _ {4} $各向异性闪烁体的开发和改进
Developments and improvements of radiopure ZnWO$_{4}$ anisotropic scintillators
论文作者
论文摘要
Znwo $ _4 $是各向异性水晶闪烁体；对于其特殊的特征，在研究这些暗物质（DM）候选核后坐力的暗物质（DM）候选者中，利用所谓的方向性方法是一个非常有前途的检测器。最近，在Adamo项目的框架中，已经进行了高质量和超级式Znwo $ _4 $ Crystal Swindillators的R \＆D。在本文中，据报道，研究了Znwo $ _4 $对$α$颗粒的各向异性响应的测量值报告了中子散射引起的核后坐力。单色中子是由ENEA-CASACCIA的中子发生器产生的。已经确定了三种不同的核后坐力能量的核路后坐力的淬火因子值。这些结果为实现先锋实验提供了通过方向性来研究上述DM候选者的可能性。
The ZnWO$_4$ is an anisotropic crystal scintillator; for its peculiar characteristics, it is a very promising detector to exploit the so-called directionality approach in the investigation of those Dark Matter (DM) candidates inducing nuclear recoils. Recently, in the framework of the ADAMO project, an R\&D to develop high quality and ultra-radiopure ZnWO$_4$ crystal scintillators has been carried out. In the present paper the measurements to study the anisotropic response of a ZnWO$_4$ to $α$ particles and to nuclear recoils induced by neutron scattering are reported. Monochromatic neutrons have been produced by a neutron generator at ENEA-CASACCIA. The quenching factor values for nuclear recoils along different crystallographic axes have been determined for three different nuclear recoils energies. These results open the possibility to realize a pioneer experiment to investigate the above mentioned DM candidates by means of the directionality.
