[en] This book is comprised of twelves chapters, which deals with various amorphous film materials and goes as follows; Glass transition, manufacture method of amorphous solid, classification of amorphous materials, test technology for study of structure of Amorphous film materials, structure of Amorphous film materials, its flaw and electronic state, optical property of amorphous film materials, electronic property of amorphous semiconductor, chalcogenide film, application of amorphous chalcogenide film, application amorphous silicon semiconductor and application of amorphous alloy materials.

[en] Photoinduced characteristics of amorphous (a-) ZnSe thin films at 10 and 300 K have been investigated using real-time photoluminescence (PL) and X-ray diffraction. The structural phase of as-deposited film is evaluated to be predominantly amorphous with uniformly distributed nano-scale crystallites, and the optical energy gap and complex refractive index are approximately 2.928 eV and 3.04+i0.35 (at λ=325 nm), respectively. While the crystallite size is enlarged after illumination with HeCd laser at 300 K, a photodarkening effect without a change in crystallite size is observed in films illuminated at 10 K. That is, two types of temperature-dependent photoinduced changes are observed in a-ZnSe (i.e. amorphous-to-nanocrystalline transition at 300 K and amorphous-to-amorphous transition at 10 K). PL spectra of the photoinduced a-ZnSe measured at 10 K apparently show both the Stokes-shift and near band-edge broad peaks centered at ∼1.5 and ∼3.0 eV, respectively. In this work, we discuss a series of PL characteristics in a-ZnSe using a simple model based on valence-alternation pairs

[en] This paper presents the development of a deadweight type 6-component force/moment generator for estimating characteristics of multi-component loadcell. Several new methods in moment generation are introduced in order to produce accurate force / moment and to minimize coupling effect between each force or moment components. In order to verify the reliability of the calibration system developed, estimation of the method for generating moment components and cross measurements between force or moment components are carried out utilizing a commercial torque cell and both-ends fixed beam designed in this paper

[en] At present the radioactive wastes, either in solid or liquid state, generated from HANARO are transferred to and treated or stored in Radioactive Waste Treatment Facility(RWTF). However the RWTF does not have proper technology to treat radioactive waste contaminated with tritium from HANARO. Neither does RWTF have enough space to store it. Accordingly it is imperative to have proper means to reduce the amount of radioactive waste generated from HANARO and to treat them more safely. This study was performed to develop the methods to reduce, safely handle and treat the radioactive wastewater, spent ion exchange resins and solid radioactive waste contaminated with tritium generated from HANARO. Results of this study could be applied to the operation of the HANARO. And some of them have already been adopted and used in the filed of HANARO

[en] As a method to enhance the sensitivity (S) of an inorganic resist for focused-ion-beam (FIB), lithography, sub-0.1 μm patterning properties of a columnar structural α-Se₇₅Ge₂₅ resist have been investigated using 30 keV low-energy Ga⁺-FIB exposure and CF₄ reactive-ion etching (RIE). development. The Se₇₅Ge₂₅ thin films were 60 .deg. and 80 .deg. -obliquely deposited on Si substrate and parts of the films were annealed for several minutes at the glass transition temperature (T_g=∼220 .deg. C). Columnar structures with the angles of approximately 40 .deg. and 65 .deg. are observed in 60 .deg. and 80 .deg. -obliquely deposited films, respectively, and they disappear after annealing. Despite the disappearance of the columnar structures, a critical decrease in thickness is not observed. For the FIB exposures with a beam diameter of ∼0.1μm and around the threshold dose, the negative-type fine patterns with linewidth of about 0.06∼0.09 μm are fabricated successfully. Then, the imaging contrast (γ) is evaluated to be approximately 4.0 and the S to be ∼7.0x10¹⁴ ions/cm², which corresponds to about half that of normally (0 .deg. ) as -deposited resist

[en] Choledochal cyst is a rare malformation of the pancreatobiliary ductal system, manifested by dilatation of biliary tree with or without anomalous insertion of the common bile duct into pancreatic duct. The purpose of this study is to review the incidence of anomalous pancreatobiliary union(PBU) and the shape of common bile duct based on the angle of pancreatic duct and common bile duct union. We analyzed cholangiopancreatographic findings of 21 patients with choledochal cyst, emphasizing PBU. The PBU was classified into acute-angled PBU, right-angled PBU, normal PBU, and unknown PBU on the basis of common bile duct insertion to pancreatic duct. The shape of common bile duct dilatation was evaluated with regard to angle of PBU. Fourteen of 21 patients had anomalous PBU with slender or ectatic form of common channels. Three patients and normal opening of common bile duct and pancreatic duct, and in remaining 4 patients the PBU was not visualized. Among 14 patients with PBU, 5 patients had right-angled PBU and 9 patients had acute-angled PBU. Cystic form of common bile duct dilatation was seen in 13 patients and cylindrical form was in 8 patients. Cystic dilatation of common bile duct was seen in 4 patients out of 5 right-angled PBU. Patients with choledochal cyst had high incidence of anomalous PBU with common channel (67%). The shape of common bile duct dilatation was cystic in 62% of patients, and the right-angled PBU was prone to be cystic dilatation (80%)

[en] In a demonstration scale equipment for treatment of tritium in off-gas, Pt/SDBC as oxidation catalyst and Zeolite 13X as adsorbent was charged in the beds, respectively. It was confirmed from the performance test that decontamination factor of the equipment showed more than 100 under the flow rate of off-gas of 90 l/hr and at the temperature of 65 ∼ 80 .deg. C. A small scale CECE process has been developed combining LPCE catalytic column with SPE (solid polymer electrolyte) electrolysis. The catalytic column was a trickle-bed type packed with the mixture of 1 wt% Pt/SDBC catalyst and 4 mm Dixon wire-mesh ring. The experimental results of the CECE process proved that the decontamination factor of 13 ∼ 20 under the operating conditions of the water of the 4 l/day and the effluent hydrogen gas of 16.2 mol/h. A design code of CECE process also developed which will be applied the tritium industry. An experimental method for the reduction of tritiated organic waste by using catalytic oxidation was tested in a heated catalytic reactor of 0.5 wt% Pd/Al₂O₃. The simulated organic liquid was converted to water over 99%. A gas chromatographic column material was developed for the separation of mixed hydrogen isotopes. 17 wt% Pd-Pt on alumina showed 90% separation efficiency at 77 % yield for the separation of 29.2 % D₂-H₂ gas mixture

[en] A preliminary design concept of metal hydride beds for the storage and delivery system (SDS) and the long term storage system (LTS) in the ITER was reported by authors. The SDS bed consists of a primary vessel containing ZrCoQx (Q=90T-10D, 50T-50D) and a secondary vessel for protecting and insulating the primary vessel. In the primary vessel, about 3.5kg of ZrCo absorb D-T at room temperature and desorb D-T at 250-350 .deg. C. Twenty six nickel fins with a 1mm thickness and 106mm in diameter (2mm less than the inner diameter of the primary vessel) are attached at a 10 mm pitch to increase the heat transfer from the heater to the ZrCoQx. In the secondary vessel, four thermal barriers within the inner wall surround the primary vessel for insulation and an outer wall of the secondary vessel surrounds the inner wall of the secondary vessel with a vacuum layer. To meet ITER plasma experiment requirements, the SDS beds have to supply D-T gas at a delivery of ∼ 20Pam³/s (time average) delivery rate is required in order to supply 50Pam³/s to the fuel injection system (FIS). The internal design structure of the LTS bed, which stores T2 and/or 90T10D, is similar to that of SDS bed. The present study describes design detail of the heater required for the SDS bed and the LTS bed and their heating performance analyzed by using the heating 7.3 program

[en] The buildup rate of tritium in the heavy water moderator and coolant of pressurized heavy water reactors in the Wolsong Nuclear Power Plant is approximately 4MCi/a. The accumulation of tritium caused by the (n,γ ) reaction on deuterium is usually assumed to follow simple exponential kinetics, determined by the neutron flux and the decay rate of tritium to helium-3. Spills of heavy water may result in unacceptable radiation doses to plant workers and cause power plants to exceed the tritium emission limit. The control of tritium is of increasing concern to the power reactor industry and general public in Korea. So, tritium gas of the Wolsong Nuclear Power Plant should be immobilized on a metal sponge such as titanium. Elemental tritium is usually stored as a metal hydride in a special storage container. The reason for this is that the reaction between hydrogen isotopes and hydriding metals is spontaneous at ambient temperature yielding a hydride of very low dissociation pressure. Titanium metal has been used for the storage of hydrogen isotopes in the container. Containers used by the Wolsong Nuclear Power Plant for the storage of hydrogen isotope are required to meet certain impact requirements which are demonstrated by experimental testing, analytical modeling, or the combination of both. This paper gives an example of computer analysis of the impact simulation for a typical container in support of experimental testing performed to assure compliance of the container design with National Regulations. The paper includes details of the analysis performed and lists the advantages and disadvantages compared with experimental testing

[en] We evaluated the monoclonal antibody CEA-79.4 against carcinoembryonic antigen as an immunoscintigraphic agent for assessing the state of the bone marrow. Western blotting of human granulocyte extracts with the antibody could confirm that the binding was with the epitope of NCA-95. Immunocytochemical staining of bone marrow aspirates revealed specific uptake of this antibody by granulopoietic cells. The affinity constant was 2-9 x 10⁹ L/mol. Immunoscintigraphy using ^99mTc-labeled CEA-79.4 in a normal volunteer revealed high uptake in the bone marrow as compared to other organs