Takarkhede Minal, More Yogesh, Patil R R, Kulkarni M S, Moharil S V
Institute of Science, R.T. Road, Civil Lines, Nagpur, India.
Institute of Forensic Science, R.T. Road, Civil Lines, Nagpur, India.
Radiat Prot Dosimetry. 2018 Oct 1;181(2):135-141. doi: 10.1093/rpd/ncx307.
Phase dependent optically stimulated luminescence (OSL) is studied in Cu-doped Sr4Si3O8Cl4. The Study shows that samples in which amount of contributing strontium metasilicate phase in Cu-doped Sr4Si3O8Cl4 is less, show intense OSL while those samples in which strontium metasilicate phase is more show weak OSL. The observed Cu luminescence is also found to be phase dependent. Sample in which Sr4Si3O8Cl4 phase is dominant, the observed Cu luminescence is around 350 nm whereas an additional longer wavelength band around 450 nm is observed when the strontium metasilicate phase is present in significant amount. The relatively phase pure, Cu-doped Sr4Si3O8Cl4 shows good OSL properties. The sensitivity of such material is 3.89 times more compared to commercial Al2O3:C (Landauer Inc.). High sensitivity, good linearity and reusability, along with low fading make this material as good OSL phosphor and may find applications in OSL based radiation dosimetry.
研究了掺杂铜的Sr4Si3O8Cl4中与相相关的光激发发光（OSL）。研究表明，在掺杂铜的Sr4Si3O8Cl4中，偏硅酸锶相含量较少的样品显示出强烈的OSL，而偏硅酸锶相较多的样品显示出较弱的OSL。观察到的铜发光也被发现与相有关。在以Sr4Si3O8Cl4相为主的样品中，观察到的铜发光在350nm左右，而当存在大量偏硅酸锶相时，会观察到一个额外的450nm左右的更长波长带。相对相纯的掺杂铜的Sr4Si3O8Cl4显示出良好的OSL特性。这种材料的灵敏度比商用Al2O3:C（Landauer公司）高3.89倍。高灵敏度、良好的线性度和可重复使用性，以及低衰退率，使这种材料成为良好的OSL磷光体，并可能在基于OSL的辐射剂量测定中得到应用。
