scholarly journals New High-Precision Measurement of the Reaction Rate of the 18O(p, α)15N Reaction via THM

2009 ◽  
Vol 26 (3) ◽  
pp. 237-242 ◽  
Author(s):  
M. La Cognata ◽  
C. Spitaleri ◽  
A. M. Mukhamedzhanov ◽  
B. Irgaziev ◽  
R. E. Tribble ◽  
...  
Keyword(s):  
High Precision ◽  
Precision Measurement ◽  
Reaction Rate ◽  
Trojan Horse ◽  
High Precision Measurement ◽  
Spectroscopic Measurements ◽  
A Value ◽  
Trojan Horse Method ◽  
First Time ◽  
Measured Strength

AbstractThe 18O(p, α)15N reaction rate has been extracted by means of the Trojan-Horse method. For the first time the contribution of the 20-keV peak has been directly evaluated, giving a value about 35% larger than previously estimated. The present approach has allowed to improve the accuracy of a factor 8.5, as it is based on the measured strength instead of educated guesses or spectroscopic measurements. The contribution of the 90-keV resonance has been determined as well, which turned out to be of negligible importance to astrophysics.

High precision measurement of the SOS surface thickness in the rough phase

1991 ◽  
Vol 1 (12) ◽  
pp. 1669-1673 ◽  
Author(s):  
Hans Gerd Evertz ◽  
Martin Hasenbusch ◽  
Mihail Marcu ◽  
Klaus Pinn ◽  
Sorin Solomon
Keyword(s):  
High Precision ◽  
Precision Measurement ◽  
High Precision Measurement ◽  
Surface Thickness

scholarly journals BATCH PROCESSING OF TREE-RING SAMPLES FOR RADIOCARBON ANALYSIS

Radiocarbon ◽  
2020 ◽  
pp. 1-13
Author(s):  
Alexandra Fogtmann-Schulz ◽  
Sabrina G K Kudsk ◽  
Florian Adolphi ◽  
Christoffer Karoff ◽  
Mads F Knudsen ◽  
...  
Keyword(s):  
High Precision ◽  
Tree Rings ◽  
Precision Measurement ◽  
Radiocarbon Dating ◽  
The Other ◽  
High Precision Measurement ◽  
Machine Performance ◽  
High Throughput Method ◽  
Ca 50 ◽  
Low Activity

ABSTRACT We here present a comparison of methods for the pretreatment of a batch of tree rings for high-precision measurement of radiocarbon at the Aarhus AMS Centre (AARAMS), Aarhus University, Denmark. The aim was to develop an efficient and high-throughput method able to pretreat ca. 50 samples at a time. We tested two methods for extracting α-cellulose from wood to find the most optimal for our use. One method used acetic acid, the other used HCl acid for the delignification. The testing was conducted on background 14C samples, in order to assess the effect of the different pretreatment methods on low-activity samples. Furthermore, the extracted wood and cellulose fractions were analyzed using Fourier transform infrared (FTIR) spectroscopy, which showed a successful extraction of α-cellulose from the samples. Cellulose samples were pretreated at AARAMS, and the graphitization and radiocarbon analysis of these samples were done at both AARAMS and the radiocarbon dating laboratory at Lund University to compare the graphitization and AMS machine performance. No significant offset was found between the two sets of measurements. Based on these tests, the pretreatment of tree rings for high-precision radiocarbon analysis at AARAMS will henceforth use HCI for the delignification.

The high precision measurement of 208Pb+208Pb Mott scattering at energies under the Coulomb barrier: the observation of new atomic effects

1995 ◽  
Vol 583 ◽  
pp. 263-267 ◽  
Author(s):  
A. Lépine-Szily ◽  
J.M. Casandjian ◽  
W. Mittig ◽  
A.C.C. Villari ◽  
R. Lichtenthäler Filho ◽  
...  
Keyword(s):  
High Precision ◽  
Precision Measurement ◽  
Coulomb Barrier ◽  
High Precision Measurement ◽  
Mott Scattering

High Precision Measurement of the Total Z0 Width Using Large Angle e+e- Events

1990 ◽  
pp. 121-139
Author(s):  
R. Battiston ◽  
M. Pauluzzi ◽  
L. Servoli ◽  
A. Santocchia
Keyword(s):  
High Precision ◽  
Precision Measurement ◽  
Large Angle ◽  
High Precision Measurement

Towards a high-precision measurement of the 3He(α, γ)7Be cross section at LUNA

2010 ◽  
pp. 177-180
Author(s):  
H. Costantini ◽  
D. Bemmerer ◽  
P. Bezzon ◽  
R. Bonetti ◽  
C. Broggini ◽  
...  
Keyword(s):  
Cross Section ◽  
High Precision ◽  
Precision Measurement ◽  
High Precision Measurement

scholarly journals Acrylic target vessels for a high-precision measurement of θ13with the Daya Bay antineutrino detectors

2012 ◽  
Vol 7 (06) ◽  
pp. P06004-P06004 ◽  
Author(s):  
H R Band ◽  
R L Brown ◽  
J Cherwinka ◽  
J Cao ◽  
Y Chang ◽  
...  
Keyword(s):  
High Precision ◽  
Precision Measurement ◽  
Daya Bay ◽  
High Precision Measurement

High precision measurement of silicon in naphthas by ICP-OES using isooctane as diluent

Talanta ◽  
2017 ◽  
Vol 164 ◽  
pp. 563-569 ◽  
Author(s):  
M.F. Gazulla ◽  
M. Rodrigo ◽  
M. Orduña ◽  
M.J. Ventura ◽  
C. Andreu
Keyword(s):  
High Precision ◽  
Precision Measurement ◽  
Icp Oes ◽  
High Precision Measurement
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