http://blogs.najah.edu/author/emp_2140 An-Najah Blogs :: en-us Sat, 27 Jul 2024 19:03:26 IDT Sat, 27 Jul 2024 19:03:26 IDT [email protected] [email protected] http://blogs.najah.edu/staff/emp_2140/article/Noise-pollution-in-factories-in-Nablus-CityPublished ArticlesNoise pollution is becoming more and more important especially in the industrialized and developed countries Industrial noise is a serious environmental problem which causes annoyance and disruption to daily activities In the West Bank however there are so far no regulatory laws to limit high industrial noise levels Due to a general lack of awareness about the ill effects of high noise levels the owners of factories pay little attention to safety measures for their workers Accordingly this study is concerned with measuring the equivalent noise levels L-eq in 38 factories in Nablus city and comparison with international standards of noise The obtained mean value of these levels is 855 dBA It has been found that the L-eq values for 40 of the selected factories are higher than the widely-adopted international standards These factories are considered by the workers to be noisy sources The continuous exposure of the workers to such high noise levels can cause hearing damage speech masking and annoyance High-level noise not only hinders communication between workers but depending upon the level quality and exposure duration of the noise it may also result in different types of physical physiological and psychological disorders This study makes some recommendations and gives advice for the workers in the factories owners of factories and for the Palestinian authorities to relieve the noise pollution problem in factories in Nablus Cityhttp://blogs.najah.edu/staff/emp_2140/article/Status-of-the-SHIPTRAP-Project-A-Capture-and-Storage-Facility-for-Heavy-Radionuclides-fromSHIPPublished ArticlesThe ion trap facility SHIPTRAP is being set up to deliver very clean and cool beams of singly-charged recoil ions produced at the SHIP velocity filter at GSI Darmstadt SHIPTRAP consists of a gas cell for stopping and thermalizing high-energy recoil ions from SHIP an rf ion guide for extraction of the ions from the gas cell a linear rf trap for accumulation and bunching of the ions and a Penning trap for isobaric purification The progress in testing the rf ion guide is reported A transmission of about 935 was achievedhttp://blogs.najah.edu/staff/emp_2140/article/Noise-measurements-in-the-community-of-Nablus-in-PalestinePublished ArticlesThis paper presents the main results obtained in a general study of noise pollution in the city of Nablus in Palestine The equivalent noise level values L-eq were measured and tabulated for 50 locations spread over the area of the city The obtained result of noise level of the 50 L-eq values is in average 680 dBA It has been found that the L-eq values for 58 of the selected locations are exceeding 650 dBA This result is obviously higher than the adopted international standards Accordingly the area of Nablus is considered an unacceptable living area Hence its buildings streets and factories require severe reconstruction and modification plans In addition there should be adequate updated plans for setting up community noise surveys and ordinanceshttp://blogs.najah.edu/staff/emp_2140/article/The-electronic-excitation-of-atoms-in-atomization-processes-studied-by-resonance-ionization-mass-spectrometryPublished ArticlesA laser ionization spectrometer designed for studying the atomization of metallic surfaces is presented First experiments on polycrystalline nickel bombarded by 15 keV Ar ions are reported The sputtered neutral atoms are selectively excited and ionized using resonance ionization spectroscopy A comparison is made between the two step-one colour and the two step-two colour schemes The influence of autoionizing states on the ionization process is discussedhttp://blogs.najah.edu/staff/emp_2140/article/Element-selective-laser-ion-source-for-on-line-mass-separatorPublished ArticlesFirst results obtained with a new type of an element-selective laser ion source for an on-line mass separation are presented The concept of the ion source is based on laser resonance ionization of nuclear reaction products thermalized in a high-pressure noble gas The fast and universal thermalization of reaction products in combination with high selectivity and high efficiency of resonance photo ionization allows to develop an element-pure source of short lived exotic nucleihttp://blogs.najah.edu/staff/emp_2140/article/An-On-Line-Laser-Ion-Source-Based-on-Resonance-Photoionization-in-a-Gas-CellPublished ArticlesFirst results obtained with a new type of on-line laser ion source based on resonant photoionization in a buffer gas cell are presented The main advantages of this new target-ion-source system are its high efficiency its selectivity its short delay time and its universality This is demonstrated with the production of an isotopically and isobarically pure beam of 55Ni T1 2200 mshttp://blogs.najah.edu/staff/emp_2140/article/A-laser-ion-source-for-on-line-mass-separationPublished ArticlesA laser ion source based on resonance photo ionization in a gas cell is proposed The gas cell filled with helium consists of a target chamber in which the recoil products are stopped and neutralized and an ionization chamber where the atoms of interest are selectively ionized by the laser light The extraction of the ions from the ionization chamber through the exit hole and skimmer is similar to the ion-guide system The conditions to obtain an optimal system are given The results of a two-step one-laser resonance photo ionization of nickel and the first results of laser ionization in a helium buffer gas cell are presentedhttp://blogs.najah.edu/staff/emp_2140/article/Resonance-ionization-in-a-gas-cell-a-feasibility-study-for-a-laser-ion-sourcePublished ArticlesA laser ion source based on resonance photo-ionization in a gas cell is proposed The gas cell filled with helium consists of a target chamber in which the recoil products are stopped and neutralized and an ionization chamber where the atoms of interest are selectively ionized by the laser light The extraction of the ions from the ionization chamber through the exit hole-skimmer setup is similar to the ion-guide system The conditions to obtain an optimal system are given The results of a two-step one-laser resonance photo-ionization of nickel and the first results of laser ionization in a helium buffer gas cell are presented