KAIST 원자력양자공학과


  • HOME
  • 교육과정
  • 세미나



Stroboscopic Small Angle Neutron Scattering (SANS) techniques have been developed which allow ordering and relaxation processes in magnetic colloids, solid alloys and in soft magnetic metallic glasses to be monitored [1-5].In these techniques the response to a periodic external excitation such as oscillating magnetic fields or pressure jumps on the sample is recorded as a time-dependent Small Angle Neutron Scattering (SANS) signal. The accessible time-range is limited for conventional stroboscopic SANS by the wavelength spread while for the pulsed frame-overlap TISANE technique [1,3] microseconds can be reached. Ordering and relaxation processes have been investigated in magnetic colloids, solid alloys and in soft magnetic metallic glasses. Using fast multi-slit double choppers in the TISANE mode allowed the time resolution to be flexibly chosen and the SANS response to be measured when the sample was exited in an oscillating magnetic fields up to 10 kHz, which is nearly two orders of magnitude faster than the limit for continuous stroboscopic techniques [2]. By using polarized neutrons precise information about the delayed reorientation dynamics and order parameters of arrested moments are obtained [4].The fast TISANE technique greatly extends the scope of SANS studies to a wide range of materials such as pressure induced phase transitions in supercritical microemulsions [5]

[1] A. Wiedenmann et al Phys. Rev. Lett. 97, 057202 (2006)

[2] A. Wiedenmann et al J, Phys. Rev. B77, 184417(2008)

[3] R. Gähler and R. Golub, Z. Phys. B 56, 5 (1984)

[4] A. Wiedenmann et al., Phys. Rev. B 84, 214303 (2011)

[5] A. Müller et al submitted to PCCP 

List of Articles
번호 제목 글쓴이 날짜 조회 수
공지 2017 봄학기 콜로퀴움 file NQE 2017.02.24 841
46 2016 가을학기 세미나 file NQE 2016.09.01 2558
45 2016 봄학기 학과 세미나 file NQE 2016.02.26 4632
44 [특강] [NEREC] Special Lecture: Prof. MICHAEL W. GOLAY (1/18, Mon. 16:00~17:30) file NQE 2016.01.14 4312
43 [초청 강연] 폭력예방통합교육 (12/8/화, 16:30~18:00, 두산강의실) file NQE 2015.12.01 4534
42 [Special Seminar] CT Clinical Practice Quality Improvement (2015/10/26, 4 pm) file NQE 2015.10.20 5220
41 2015 가을학기 학과 세미나 file 관리자 2015.09.01 5174
40 [Special Seminar] Four-dimensional Dose Reconstruction for Adaptive Radiation Therapy (3/25/2015, 10 am) file 관리자 2015.03.12 5888
39 2015 봄학기 학과 세미나 file 관리자 2015.03.02 4950
38 [Special Seminar] Design and Safety Analysis Requirements for NPPs and Their Application to Refurbished NPPs in Canada (2015/2/3, 오후2시, 교수회의실) 관리자 2015.01.29 4229
37 [Special Seminar] Econmics of nuclear power (2015/1/22, 오후2시, N7 1층 공동강의실) 관리자 2015.01.22 3860
36 [Special Seminar] Radiochemistry Research for Nuclear Engineering (2014/11/24, 2pm) 관리자 2014.11.24 3558
» [Special Seminar] Watching Nanomaterials (2014/11/17, 4~5pm) 관리자 2014.11.17 4891
34 [특강] Overview of electron paramagnetic resonance (EPR) dosimetry and imaging (2014/11/17, 오후4시, N27 1층 삼성중공업홀) 관리자 2014.11.13 3737
33 2014 가을학기 세미나 관리자 2014.08.29 3670
32 [특강] Technological Overview on Electron Paramagnetic Resonance (08/11, 오후4시, N27 5층 세미나실) 관리자 2014.08.01 4679
31 [특강] 글로벌 원자력 인력양성 동향과 차세대 인력양성 지원사업 소개 관리자 2014.08.01 3928
30 [경희대학교] 지속가능형 미래원자력에너지 시나리오 연구 초청 세미나 file 관리자 2014.07.17 3516
29 [특강] Myeloid cells promote tumor recurrence after radiotherapy (07/11, 오후2시30분, 교수회의실) 관리자 2014.07.09 3916
28 [특강] Development of pyroprocessing safeguards technologies at KAERI (03/06, 오후 4시, 교수회의실) 관리자 2014.03.03 3584
Board Pagination Prev 1 2 3 Next
/ 3