Showing papers by "TRIUMF published in 1978"
TL;DR: In this article, the angular distribution of π + elastically scattered from 12 C at E π = 28.4, 38.6 and 48.9 MeV was measured.
25 citations
TL;DR: In this article, the Lorentzian full-widths at half-maximum are 10.12 ± 0.74 and 12.0 ± 1.2 keV respectively.
23 citations
TL;DR: In this paper, the temperature dependence of the μ + Knight shift in weakly helimagnetic MnSi has been measured in the temperature range between 28 and 300 K. The observed shift is directly proportional to the host susceptibility in the paramagnetic state with a hyperfine coupling constant of 4.8 kOe/μ B.
14 citations
TL;DR: In this article, the analyzing power of backward and forward protons in the reaction p + A..-->.. p + X, using 800-MeV polarized protons, was measured.
Abstract: This paper reports measurements of the analyzing power, A/sub y/, in the production of both ''backward'' protons and forward (quasifree scattering) protons in the reaction p + A ..-->.. p + X, using 800-MeV polarized protons. For the backward protons the measurements show large negative A-dependent values of A/sub y/ at low momenta, changing to large positive values at high momenta; in the quasielastic region, A/sub y/ is large and positive, is smaller than A/sub y/ measured in hydrogen, and decreases with increasing A.
14 citations
TL;DR: In this article, the pion-nucleus interaction was found to result in an attractive shift of the 1s level of 27 ± 5 eV and in a lorentzian width of 65 ± 12 eV.
12 citations
TL;DR: The analyzing power in the 12 C(p, p ) X was measured at backward angles for E p =316 and 516 MeV as discussed by the authors, which suggests an indirect or multistep mechanism for emission of protons in the backward hemisphere.
10 citations
TL;DR: In this paper, the elastic scattering of protons from 4He has been measured for ten proton energies between 185 and 500 MeV in the angular range 144° to 168° in the lab system.
10 citations
TL;DR: In this paper, a cluster recoil mechanism is introduced for nuclear reactions in which energetic backward-going protons are observed, and it is suggested that the average leading nucleon energy and the average recoil multiplicity should be good indicators of the reaction mechanism.
9 citations
TL;DR: In this article, the expected tail-to-peak ratio of protons in NaI was calculated over the range of 40-240 MeV using recent total reaction cross-section data for sodium and iodine.
9 citations
01 Jan 1978
TL;DR: In this paper, the asymmetry in proton-proton bremsstrahlung is analyzed for a variety of kinematic conditions in the soft photon approximation, including unknown higher-order terms.
Abstract: The asymmetry in proton-proton bremsstrahlung is given for a variety of kinematic conditions in the soft photon approximation. It is argued that the asymmetry may be more sensitive to the unknown higher-order terms than the cross section and is shown that several models giving similar cross sections give quite different asymmetries, which could thus be used to distinguish among models.
3 citations
TL;DR: In this article, the average maximum photon energy k/sub m/ and the correction terms evaluated using for one modified Thomas-Reiche-Kuhn sum rule were extended for radiative muon capture, thus extending previous work for ordinary capture.
Abstract: The differential photon spectrum for radiative muon capture is expanded about the average maximum photon energy k/sub m/ and the correction terms evaluated using for one a modified Thomas-Reiche-Kuhn sum rule, thus extending previous work for ordinary capture. The resulting rate is much less dependent on k/sub m/ than the usual closure result. The ratio k/sub m//..nu.. appropriate for closure calculations, with ..nu.. the average neutrino energy, is determined and found to be approximately constant and, when correction terms are included, somewhat higher than values previously used. By similar techniques a consistency relation is derived which can be solved to explicitly estimate ''physical'' values of k/sub m/ and ..nu...
01 Jan 1978
TL;DR: In particular, the few-body problem has long been considered a small, very specialized, area of nuclear physics that could safely be ignored by the majority as mentioned in this paper, and it has provided several striking theoretical insights, and may continue to do so.
Abstract: There is a considerable number of nuclear physicists who would argue that the title of these lectures is very misleading. In particular, the few-body problem has long been considered a small, very specialized, area of nuclear physics that could safely be ignored by the majority. I will have succeeded in my task if in the course of this presentation I can convince you that in pion physics, the pion few-nucleon system has provided several striking theoretical insights, and may continue to do so.
01 Jan 1978
TL;DR: It will be only too painfully obvious that given the wide range of topics included in DS5—ranging from low energy n-d scattering to hypernuclear physics—the emphasis given here is highly subjective.
Abstract: In this report I shall briefly outline those contributions to Discussion Session 5 (DS5) which seem most important to me. As far as possible an attempt will also be made to place these contributions in the context of current developments in the appropriate field. Of course, it will be only too painfully obvious that given the wide range of topics included in DS5—ranging from low energy n-d scattering to hypernuclear physics—the emphasis given here is highly subjective. While I have attempted as far as possible to remove personal biases, I must apologise in advance to those whose work is undeservedly given inadequate treatment.