题目：Introduction to ISIS pulsed Neutron and Muon facility and simple science examples

报告人：Devashibhai Adroja研究员

       Rutherford Appleton Laboratory

时间：2018年9月3日下午16:00

地点：国家脉冲强磁场科学中心C204

报告摘要：

The ISIS pulsed neutron and muon source at the Rutherford Appleton Laboratory in Oxfordshire UK is a world-leading centre for research in the physical and life sciences. ISIS produces beams of neutrons and muons that allow scientists to study materials at the atomic level using a suite of instruments, often described as ‘super-microscopes’. It supports a national and international community of more than 2000 scientists who use neutrons and muons for research in physics, chemistry, materials science, geology, engineering and biology. From the original vision over 30 years ago, ISIS has become one of the UK’s major scientific achievements. As the world’s leading pulsed neutron and muon source. ISIS has changed the way the world views neutron scattering and muon spin rotation and relaxation, which provide microscopic and fundamental information on the complex many body systems. I will briefly introduce the neutron and muon techniques and discussed the production of neutrons and muons at ISIS facility. I will discussed neutron and muon instruments, data analysis software and present some recent science examples. The science examples will be focussed on the investigations of spin excitations in Fe-based superconductors and heavy fermion superconductors, spin wave investigation in mutliferroics materials, spin gap and spin wave investigation in Kondo insulators and magnetic excitations in molecular magnets. Further, I will discuss investigations of novel crystal structure using the high resolution neutron powder diffraction and magnetic structures using a cold neutron diffractometer and diffuse scattering investigations using a single crystal diffractometer. I will also show how muon technique is used to investigate elemental analysis. I will also present upgrade plan for excitations instruments. Further I will show new funding mechanism for Chinese user community to use ISIS Facility.

报告人简介：

Dr Adroja is a senior scientist at the ISIS facility and is responsible for the MERLIN spectrometer and he is also a visiting professor at Johannesburg University, South Africa. His research programme is focused on strongly correlated electron systems with more than 24 years of experience in neutron scattering and muon spin rotation technique. Dr Adroja obtained his Ph.D. from IIT Bombay (in 1991), India, and then worked as a research fellow at Southampton, Hiroshima (JSPS fellowship 1997), St Andrews universities before joining ISIS in 1999. Since 2001, he work at ISIS as an instrument scientist in Excitations group, then from 2007 to present, he become a Senior Scientist at ISIS. He was the pioneer in discovering the Kondo insulator CeRhS, and the related materials Ce(NiCo)Sn and CePdSb. Recently he has made significant contributions to the field of spin and charge gap formation in strongly correlated electron systems and published two review papers on this topic. He has published over 290 papers in peer-review journals.

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