Vu Dong Cao

• Ph.D
• Senior Researcher at Dalat Nuclear Research Institute (DNRI)

Eight neutron activation analysis research groups from seven countries have participated in a trial proficiency test under the auspices of the Forum for Nuclear Cooperation in Asia. Three stream sediment reference materials were used in the test. A high degree of proficiency was found in the quantification of Co and Sc and more than 20 elements wer...

Exploring the potential of Fe 3 O 4 @lapatinib- ¹⁵³ Sm nanoparticles for breast cancer treatment.

In the experiments of neutron interaction with research samples, the incident neutron energy spectrum, distribution inside the irradiating sample volume, is affected by the unexpected neutron self-shielding effects. The nature of these effects is due to the formation and thickness of the irradiating sample, which significantly causes neutron self-a...

The thermal neutron radiative capture cross-section (σ0) and the resonance integral (I0) of the reaction 186W(n,γ)187W were measured by the thin foil activation method using the well thermalized neutron source at the graphite thermal column facility of the Dalat research reactor. The activities of the irradiated target and monitor samples were meas...

This study investigated the chronology of heterogeneous, multilayered, and overlapped architectures by combining experiments with computer simulations of thermoluminescence (TL) dating. We proposed a heterogeneous and multilayered model based on the cylindrical configuration for both excavated and buried status. The obtained results indicated that...

This paper presents the application of the MCNP5 code to conduct a modification design and simulation of a thermal neutron beam for neutron capture studies at the Dalat Nuclear Research Reactor (DNRR). The designed configuration of the horizontal neutron channel No.2 at the DNRR, which contains a conical collimator of 240.3 cm in length, and neutro...

The elemental concentration and grain size composition (sand, silt and clay) of 63 bulk estuarine sediment samples from the bank of the Hau River in Mekong Basin were analyzed by neutron activation analysis and laser-diffraction particle size analyzer in this study. Principal component analysis was used to investigate the association between elemen...

The instrumental neutron activation analysis (INAA) method was combined with the γ − γ coincidence technique to measure Iron (Fe) and Terbium (Tb) concentrations in geological (Montana II Soil) and environmental (Coal Fly Ash) standard materials. The measured concentrations, which agree well with the corresponding certificate values, are compared w...

In this paper, the distribution of absorbed dose components in a polyethylene phantom for BNCT application at Dalat Nuclear Research Reactor (DNRR) were calculated using the MCNP5 code. The configuration of horizontal neutron channel No.2 of the DNRR, which contains a cylindrical collimator with neutron filters of 20-cm Si and 3-cm Bi, was simulate...

A natural-based sodium carboxymethyl cellulose (CMC) hydrogel reinforced with bentonite was prepared by using gamma irradiation technology. This is a novel hydrogel that uses natural polymer to absorb metal ions in wastewater. The influence of dose, concentration of CMC and bentonite on the sorption of hydrogels was investigated by atomic absorptio...

Background and Objective: The neutron beams at the Dalat nuclear research reactor have been utilized for experimental researches based on the neutron capture reaction (n,() and prompt gamma neutron activation analysis. In recent years, a national project has been carried out for extending and improving the physical characteristics of the beam facil...

Trong nghiên cứu này, chúng tôi áp dụng kỹ thuật ID-ICP-MS để xác định hàm lượng của Ce (LREE), Sm (MREE), và Yb (HREE) trong ba mẫu chuẩn địa chất: BHVO-2, BCR-2, và NIST 2711a. Các thí nghiệm hiệu chuẩn trong kỹ thuật ID như hiệu chuẩn hàm lượng và độ phổ biến đồng vị tương đối của dung dịch spike đã được tiến hành bằng thực nghiệm. Bên cạnh đó,...

This report introduces a new computer program, having been developed initially at the Nuclear Research Institute at Dalat, for the multivariate data analysis techniques. In this preliminary version of the program, the size of a given data set to be analyzed is up to 50 variables and thousand observations, and can be used to perform some of the mult...

The cyclic neutron activation analysis (CNAA) facility based on a pneumatic transfer system for short irradiation and rapid counting has recently been upgraded at the Dalat research reactor. The original facility was only designed for single irradiation. Therefore, this work has aimed to upgrade both hardware and software for the cyclic irradiation...

INAA, ICP-AES and ICP-MS were utilised to elementally characterise four environmental reference materials (NIST SRM 1646a (Estuarine Sediment), NIST SRM 1400 (Bone Ash), IAEA-395 (Urban Dust) and IAEA-450 (Algae)). An analytical scheme consisting of the three analytical methods was first applied to NIST SRM 1646a to validate the methodology because...

CI chondrites are considered as the most primitive materials available in our solar system from a chemical point of view. Their bulk composition is similar to that of the solar photosphere excepted for volatiles such as H, C, N and O [e.g., 1]. CI chondrites comprise of only five falls and possibly a few finds from Antarctica. It was reported th...

Most of meteorites are currently col-lected from cold and hot deserts. As these meteorites may have resided on the Earth’s surface, they have experienced variable degree of terrestrial weathering. Terrestrial weathering obscure petrographic and chem-ical features, leading to misclassification and misun-derstanding of geochemistry and cosmochemistry...

Quality evaluation of the k 0-standardized neutron activation analysis (k 0-NAA) at Dalat research reactor (DRR) has been implemented by analyzing the SMELS, a synthetic multi-element standard material as well as the certified reference materials for purposes of validation and verification of the method. The results revealed that the k 0-NAA establ...

Fish were selected as a common target sample for a collaborative study of FNCA(Forum for Nuclear Cooperation in Asia)-NAA(neutron activation analysis) project in 2011. Six Asian countries took part in this work. Fish samples were purchased from commercial markets and prepared by following an agreed protocol. Toxic and essential elements in the prep...

In the framework of the program on Russian Research Reactor Fuel Return (RRRFR) and the program on Reduced Enrichment for Research and Test Reactor (RERTR), the full core conversion of the Dalat Nuclear Research Reactor (DNRR) to low enriched uranium (LEU, 19.75% 235U) fuel was performed from November 24, 2011 to January 13, 2012. The reactor is...

The Dalat Nuclear Research Reactor (DNRR) with the nominal power of 500 kW was reconstructed and upgraded from the USA 250-kW TRIGA Mark-II reactor built in early 1960s. The renovated reactor was put into operation on 20th March 1984. It was designed for the purposes of radioisotope production (RI), neutron activation analysis (NAA), basic and appl...

Thermal neutron capture cross-sections and resonance integrals for 69Ga and 71Ga were measured by the activation method. The experimental samples with and without a cylindrical Cd-shield case 1 mm in thickness were irradiated in the neutron field of the thermal column facility of Dalat research reactor. The induced activities in the samples were me...