1. Full name: Trinh Thi Hue                                             2. Sex:  Female

3. Date of birth: 01/6/1986                                                4. Place of birth: Thanh Hoa Province

5. Admission decision number 5543/QD-DHKHTN signed on 23/12/2013 by the Rector of VNU University of Science.

6. Changes in academic process:  Non

7. Official thesis title:

Study of interatomic effective potentials, thermodynamic parameters, cumulants and XAFS spectra based on Anharmonic Correlated Debye Model.

8. Major: Theoretical Physics and Mathematical Physics                               9. Code: 62440103

10. Supervisors: Principal: Prof. Dr. Sci. Nguyen Van Hung        

                             Second: Dr. Ha Đang Khoa

11. Summary of the new findings of the thesis

- Having derived the Anharmonic Correlated Debye Model (ACDM) for bcc crystals with analytical expressions for anharmonic interatomic effective potential and cumulants in high-order expanded Debye-Waller factors.

- Having derived the First Shell Near Neighbor Contribution Approach (FSNNCA) for the vibration of absorber and backscatterer atoms to take the many-body contribution into account.

- Having numerically computed the anharmonic XAFS spectra and their Fourier transformations with anharmonic contribution of cumulants based on ACDM to obtain the structural information and thermodynamic parameters of the crystals under study in good agreement with experiments.

12. Practical applicability, if any:

The obtained results contribute to the evaluation of the thermodynamic properties and anharmonic effects in XAFS to get the information on structure and thermodynamic parameters of bcc crystals from XAFS experimental data.

13. Further research directions, if any:

To derive the Anharmonic Correlated Debye Model (ACDM) for other cubic crystals.

14. Thesis-related publications:

[1] Nguyen Van Hung, Trinh Thi Hue, Nguyen Ba Duc (2015), “Calculation of Morse Potential Parameters of bcc Crystals and Application to Anharmonic Interatomic Effective Potential, Local Force Constant”, VNU Journal of Science: Mathematics – Physics, 31(3), pp. 23-30.

[2] Nguyen Van Hung, Trinh Thi Hue, Ha Dang Khoa, Dinh Quoc Vuong (2016), “Anharmonic correlated Debye model high-order expanded interatomic effective potential and Debye-Waller factors of bcc crystals”, Physica B 503, pp. 174–178.

[3] Nguyen Van Hung, Trinh Thi Hue, Nguyen Ba Duc, Dinh Quoc Vuong (2016), “Temperature  Dependence  of  High-Order  Expanded  Debye – Waller Factors and XAFS of Metallic Molybdenium”,  Journal of Chemistry and Materials Research 5(5), pp. 99-104.

[4] Nguyen Van Hung, Trinh Thi Hue, Nguyen Bao Trung, Nguyen Cong Toan (2017), “Anharmonic Correlated Debye Model high-order Expanded Debye-Waller Factors of BCC Crystals: Application to Metallic Wolfram”, VNU Journal of Science: Mathematics – Physics, 33(1), pp. 22-28.

[5] Nguyen Van Hung, Trinh Thi Hue, Ha Dang Khoa and Tong Sy Tien (2017), “X-ray absorption fine structure of bcc crystals studied based on high-order expanded Debye –Waller factors”, Communications in Physics, 27(1), pp. 55-64.