Henry R. Weller

Henry R. Weller

Professor Emeritus of Physics

Office Location: 
Tunl, Durham, NC 27708
Front Office Address: 
Box 90308, Durham, NC 27708-0308
Phone: 
(919) 660-2633

Overview

Dr. Weller's research program at TUNL has been concentrated on using radiative capture reactions induced by polarized beams of protons and deuterons to study nuclear systems. These measurements have permitted him to observe the "D-state" in the 4He nucleus, which arises from the two body tensor force. This result changes the rate of the d+d fusion reaction by almost a factor of 50 at very low energies. This is of great interest in nuclear astrophysics. In the past year, he has focused on studies of (d,n) reactions using very low energy polarized beams. Such studies have not been previously performed. These reactions are of great interest in nuclear astrophysics. Dr. Weller is also working to help develop an intense beam of polarized gamma-rays using the facilities of the Duke Free Electron Laser Laboratory. (Dr. Weller is the Nuclear Physics Program Manager and is in charge of the development of the target room for the HIGS Project at DFELL). This beam will ultimately allow new experimental studies capable of testing fundamental aspects of Quantum Chromodynamics in the low-energy sector, such as the up-to-down quark mass ratio. The experiments at HIGS require very sophisticated targets and detector systems. Dr. Weller is leading the development of these. The first experiments using these setups and the upgraded HIGS facility are expected to begin in the spring of 2008.

Education & Training

  • Ph.D., Duke University 1967

Tornow, W., et al. “Nuclear research at Duke [5].” Science, vol. 279, no. 5350, Jan. 1998, pp. 462–63.

Weller, H. R., and M. J. Balbes. “Polarized deuteron capture on 3He in the fusion resonance region 1.” Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 402, no. 2–3, Jan. 1998, pp. 428–32. Scopus, doi:10.1016/S0168-9002(97)00885-1. Full Text

Wulf, E. A., et al. “Astrophysical [Formula Presented] factors for the [Formula Presented] reaction.” Physical Review C  Nuclear Physics, vol. 58, no. 1, Jan. 1998, pp. 517–23. Scopus, doi:10.1103/PhysRevC.58.517. Full Text

Tilley, D. R., et al. ““Energy Levels of Light Nuclei, A = 20".” Nucl. Phys., vol. A636, 1998, pp. 247–364.

Cheves, G. M., et al. “Energy levels of light nuclei, A=3-20, available from Triangle Universities Nuclear Laboratory on the World Wide Web..” Abstracts of Papers of the American Chemical Society, vol. 213, Apr. 1997, pp. 74-NUCL.

Moltz, D. M., et al. “Measurement of the (7)BE(p,gamma) cross section at low energies..” Abstracts of Papers of the American Chemical Society, vol. 213, AMER CHEMICAL SOC, Apr. 1997, pp. 43-NUCL.

Rice, B. J., et al. “Direct determination of the doublet and quartet [Formula Presented] cross sections in [Formula Presented]-[Formula Presented] radiative capture at near-thermal energies.” Physical Review C  Nuclear Physics, vol. 56, no. 6, Jan. 1997, pp. R2917–19. Scopus, doi:10.1103/PhysRevC.56.R2917. Full Text

Schmid, G. J., et al. “Correction factors for γ-ray relative intensities in the 66Ga radioisotope.” Nuclear Physics A, vol. 607, no. 2, Sept. 1996, pp. 139–51. Scopus, doi:10.1016/0375-9474(96)00214-X. Full Text

Carman, T. S., et al. “The TUNL-FELL inverse Compton γ-ray source as a nuclear physics facility.” Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 378, no. 1–2, Aug. 1996, pp. 1–20. Scopus, doi:10.1016/0168-9002(95)01486-1. Full Text

Pages