| 1. |
- Alcorn, J, et al.
(författare)
-
Basic instrumentation for Hall A at Jefferson Lab
- 2004
-
Ingår i: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. - : Elsevier BV. - 0167-5087 .- 0168-9002. ; 522:3, s. 294-346
-
Tidskriftsartikel (refereegranskat)abstract
- The instrumentation in Hall A at the Thomas Jefferson National Accelerator Facility was designed to study electro-and photo-induced reactions at very high luminosity and good momentum and angular resolution for at least one of the reaction products. The central components of Hall A are two identical high resolution spectrometers, which allow the vertical drift chambers in the focal plane to provide a momentum resolution of better than 2 x 10(-4). A variety of Cherenkov counters, scintillators and lead-glass calorimeters provide excellent particle identification. The facility has been operated successfully at a luminosity well in excess of 10(38) CM-2 s(-1). The research program is aimed at a variety of subjects, including nucleon structure functions, nucleon form factors and properties of the nuclear medium. (C) 2003 Elsevier B.V. All rights reserved.
|
|
| 2. |
|
|
| 3. |
- Stanoiu, M., et al.
(författare)
-
Study of neutron rich carbon and oxygen nuclei up to drip line
- 2004
-
Ingår i: Nuclear Physics A. - : Elsevier BV. - 0375-9474 .- 1873-1554. ; 746, s. 135C-139C
-
Tidskriftsartikel (refereegranskat)abstract
- In-beam gamma-spectroscopy using fragmentation reactions of radioactive beams have been performed in order to study the structure of excited states in neutron rich oxygen and carbon isotopes. For the produced fragments, gamma-ray energies, intensities and gamma-gamma coincidences have been measured. The experiment was performed at GANIL. New gamma-lines have been identified and placed in level schemes for C17-20. The non observation of any gamma-ray in O-23,O-24 suggests that their first excited states lie above the neutron threshold. These results are discussed in the framework of shell model calculations.
|
|
| 4. |
- Stanoiu, M., et al.
(författare)
-
Study of drip line nuclei through two-step fragmentation
- 2004
-
Ingår i: European Physical Journal A. - : Springer Science and Business Media LLC. - 1434-6001 .- 1434-601X. ; 20:1, s. 95-96
-
Tidskriftsartikel (refereegranskat)abstract
- We have studied the structure of light neutron-rich nuclei around N = 16 by employing the in-beam gamma-ray spectroscopy technique using the fragmentation of secondary beams of Ne-25,Ne-26, Na-27,Na-28 and Mg-29,Mg-30 isotopes. This secondary-beam cocktail was obtained by the fragmentation of a 36 S beam at 77.5 MeV.A by the SISSI/GANIL facility. By a second-step fragmentation, we have measured gamma-ray-residue coincidences in C17-20 and O-23,O-24 and described the obtained levels in the framework of the shell model.
|
|
| 5. |
- El Amin, Seif, et al.
(författare)
-
Introducing qualitative perinatal audit in a tertiary hospital in Sudan
- 2002
-
Ingår i: Health Policy and Planning. - 0268-1080 .- 1460-2237. ; 17:3, s. 296-303
-
Tidskriftsartikel (refereegranskat)abstract
- In a 3-month period, May to August 2000, the perinatal mortality rate at Omdurman Maternity Hospital (OMH), Sudan, was 8.2%. Two groups of perinatal deaths, intrapartum deaths of non-malformed infants and neonatal deaths of mature infants above 34 weeks, both considered to be potentially avoidable by improved care, were in excess when compared with other regions. It was therefore decided to perform in-depth assessment of cases in these two groups. An interdisciplinary internal audit was designed in collaboration with two external obstetricians. The audit activity was preceded by a 2-day workshop at the hospital. Individual assessments based on 43 detailed narratives were followed by regular consensus meetings. This structure seemed useful for interdisciplinary discussions, and the audit process resulted in several specific suggestions for quality improvement in data collection, interdisciplinary collaboration, and obstetric and neonatal care. The present audit activity is not very resource demanding and therefore a good starting point for quality assurance in a developing country. However, since adverse outcome audit only focuses on selected cases and may encourage interventions without considering the full impact on the population, it should not stand alone. Audit of perinatal deaths should be combined with other quantitative and qualitative quality assessment activities for improvement of perinatal care.
|
|
