.
New data are presented for the
7
Li(d, p)
8
Li stripping reaction which, together with previously reported elastic scattering data taken in the same experiment, provide a coherent set. These data, ...plus existing measurements of the elastic scattering and stripping at 6MeV/u were analysed within the same coupled reaction channels scheme. Good descriptions of the stripping data to the 0.0MeV
2
+
and 0.98MeV
1
+
states of
8
Li were obtained using a set of
〈
^8Li| ^7Li +
n
〉 overlaps taken from the literature, provided that the elastic scattering was also well described. Multi-step reaction paths made significant contributions to the description of the larger angle data. The asymptotic normalisation coefficients are compared with previous determinations.
•We studied the 24Mg(d,p0,1,2) reactions at energies and detection angles suitable for NRA.•We studied the natMg(d,d0) differential cross section relative to the Rutherford case.•We validated the ...obtained results via benchmarking experiments.
The 24Mg(d,p0,1,2) reactions were investigated in the present work for Ed,lab=1300–2050keV, at four backward detection angles, namely at 140°, 150°, 160° and 170°, suitable for NRA depth profiling studies. Differential cross-sections were obtained for the first three proton levels (p0, p1, p2), using a variable energy step. The differential cross-section ratio of the natMg(d,d0) reaction with respect to the Rutherford one was also measured at 140° and at 150°, for the same deuteron beam energy range. The results have been compared to data already existing in literature, and similarities, as well as discrepancies are being discussed and analyzed. The possible existence of previously unknown high-excitation levels in the compound nucleus 26Al is also discussed. The obtained results have been validated through benchmarking runs in the same angular range, at two deuteron beam energies, using a thick, high-purity, highly-pressed magnesium oxide pellet as target.
We present performance studies of a full-length prototype for the CASTOR quartz-tungsten sampling calorimeter, installed in the very forward region of the CMS experiment at the LHC. The response ...linearity and energy resolution, the uniformity, as well as the showers’ spatial properties in the prototype have been studied with electrons, pions and muons of various energies. A special study was also carried out for testing the light-output with a 90-degree cut of the quartz plates of the calorimeter. The data were taken during the CASTOR test beam at CERN/SPS in 2007.
.
Total reaction cross sections for the radioactive nucleus
8
Li on
90
Zr are reported at the near-barrier energies of 18.5 and 21.5MeV, derived from quasi-elastic scattering measurements. An ...analysis of the quasi-elastic scattering results is performed within an optical model framework using the BDM3Y1 interaction and total reaction cross sections are deduced. These quantities, appropriately reduced, are compared with previous data obtained in elastic scattering measurements with well and weakly bound projectiles on various targets and a formula for predicting total reaction cross sections with an uncertainty of
% is obtained. Further on, the ratios of direct to total reaction cross sections are estimated for
6,8
Li on various targets and are compared with CDCC or CRC calculations. The energy dependence of the optical potential is also discussed.
We present results of the performance of the second prototype of the CASTOR quartz–tungsten sampling calorimeter, to be installed in the very forward region of the CMS experiment at the LHC. The ...energy linearity and resolution, as well as the spatial resolution of the prototype to electromagnetic and hadronic showers are studied with E=20–200 GeV electrons, E=20–350 GeV pions, and E=50, 150 GeV muons from beam tests carried out at CERN/SPS in 2004. The responses of the calorimeter using two different types of photodetectors (avalanche photodiodes APDs, and photomultiplier tubes PMTs) are compared.
Excitation function measurements of thick target γ-ray yields were taken for the elements Li, B, F, Na, Mg, Al, Si and P after bombardment with protons at the energy interval
E
p=1.0–4.1 MeV. The ...yields of all γ-rays emitted at
E
p=1.77 and 4.0 MeV are tabulated and discussed.
•We studied the 23Na(d,d0) elastic scattering at energies and detection angles suitable for IBA.•We measured differential cross sections.•We benchmarked the obtained results.
The 23Na(d,d0)23Na ...elastic scattering differential cross-sections were measured in the energy range Ed,lab = 1060–2400 keV for elastic backscattering spectrometry (EBS) purposes. Thin sodium targets were used, made by evaporating Na2O powder on self-supporting carbon foils, with an ultra-thin Au layer on top for normalization purposes. The measurements were made with deuteron beam energy steps of 20 or 30 keV and for the laboratory scattering angles of 140°, 150°, 160°, and 170°. The determined cross-section datasets were benchmarked using a thick NaCl target at the deuteron energies (1110, 1320, 1500, 1820 keV) and at scattering angles 140°, 150°, 160° and 170°.
Fusion cross sections are extracted for the
7
Li$ + $
28
Si system, via reaction cross section and transfer measurements at sub- and near-barrier energies (
E
lab
= 5.7 to 14MeV). The energy ...evolution of transfer to reaction cross section ratios is determined with the aid of CDCC calculations, which subsequently allows the deduction of fusion cross sections at sub- and near-barrier energies. It is shown that fusion can be well represented in a BPM context. Fusion cross sections are compared for the systems
7
Li$ + $
28
Si and
6
Li$ + $
28
Si, the latter studied previously, and are found to exhibit different strengths. Last, the direct channels determined at 13MeV, are found to be dominated by a 2
n
-transfer mechanism.
•We studied the 31P(d,d0) elastic scattering at energies and detection angles suitable for IBA.•We measured differential cross sections.•We benchmarked the obtained results.
The differential cross ...sections of deuteron elastic scattering on 31P were determined in the present work for the first time, in the projectile energy range Ed,lab = 900–2400 keV (in energy steps of ~10–30 keV), suitable for analytical purposes. The measurements were performed at the 5.5 MV TN11 HV Tandem Accelerator of N.C.S.R. “Demokritos”, Athens, Greece. The experimental setup consisted of five silicon surface barrier (SSB) detectors, placed at the angles between 130° and 170° (in steps of 10°) in a high-precision goniometer. The implemented target was a thin GaP layer evaporated on top of a thin carbon foil. The obtained differential cross-section datasets were benchmarked against a polished GaP crystal and the deviations from the corresponding ones using Rutherford’s formula will be discussed and analyzed.
The differential cross sections of the natSi(d,d0) elastic scattering were determined at six backscattering angles, 120°, 130°, 140°, 150°, 160° and 170°. Two experiments were performed, one for the ...determination of the cross-section values and one for the validation of the obtained results. In the first experiment, a thin Si3N4 target with a thin layer of Au evaporated on top was bombarded with deuterons in the energy range between 1000 and 2200 keV in steps of 10 keV. In the benchmarking experiment, a thick Si 1 1 1 polished crystalline wafer target with a thin Au layer evaporated on top was irradiated with deuterons at Εd,lab = 1300, 1600, 1900 and 2200 keV and at four scattering angles (130°, 140°, 150°, 160°).
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