Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2019
Abstract A hybrid detector telescope has been developed for simultaneous detection of a wide rang... more Abstract A hybrid detector telescope has been developed for simultaneous detection of a wide range of charged particles from Z = 1 to fission fragments (FFs). The telescope consists of two detection mediums, namely, gas-ionization chamber and CsI(Tl) crystals, enabling three stages of particle identification (PI). The gas-ionization chamber is segmented longitudinally into two parts in order to separate heavier FFs from other reaction products. The characteristics of the ionization chamber were obtained using 252Cf spontaneous fission source. The PI capabilities of the telescope has been demonstrated through in-beam measurements in 12 , 13 C + 232Th fission reactions. The potential advantage of such a hybrid detector telescope to measure the yield of light charged particles which are emitted along the direction of fission fragments, has been established. The details of the design aspects, its characteristic performance, and the results from in-beam measurements are presented in this article.
alpha-particle evaporation spectra and gamma-ray multiplicities were measured for various target-... more alpha-particle evaporation spectra and gamma-ray multiplicities were measured for various target-projectile systems corresponding to residual nuclei in the range of ZR=48-55 and with excitation energy in the range of 30-40 MeV. The high-energy part of the evaporation spectra were analyzed using the statistical model code PACE2 to derive values of the inverse level-density parameter (K). The K values were found
... in the following way. The electronic pulser signal was fed to the pre-amplifier followed by t... more ... in the following way. The electronic pulser signal was fed to the pre-amplifier followed by the electronics and data acqui-sition system and, at the same time, the samesignal was also fed to a counter module. The ratio of the ...
Inflammation is a common finding in benign prostatic hyperplasia (BPH) and may be classified as a... more Inflammation is a common finding in benign prostatic hyperplasia (BPH) and may be classified as acute, chronic active or chronic inactive prostatitis. The aim of the present study was to localise the different types of inflammatory cells in prostatic lesions to determine the sequence of events in the cellular reaction. We have carried out immunohistological characterisation of the inflammatory cells, using CD45RO and CD3 antibodies to detect T-lymphocytes, CD20 antibodies to detect B-lymphocytes, CD68 to detect macrophages, kappa and lambda immunoglobulin light chains, and antibodies against prostate specific antigen (PSA) and prostate specific acid phosphatase (PSAP). Macrophages accumulated in the lumen and glandular epithelial layers of damaged prostatic glands and were found in the periglandular cuff of inflammatory cells in acute and chronic active prostatitis. Lymphocytes also accumulated in large numbers in the glandular epithelial layers and around the glands, indicating an association with macrophages. B-lymphocytes were scanty, if at all present, in acute and chronic active prostatitis, but were prominent within well-organised follicle centres in chronic active prostatitis. Cells positive for light chains were few and scattered in prostatic tissue. PSA and PSAP activity was lost in recently damaged prostatic glandular epithelium and reappeared only in regenerating secretory epithelium, indicating leakage as a result of damage. We suggest that the initial response to prostatic injury is cellular, and probably related to leakage into the periglandular tissues of PSA, PSAP and other antigenic molecules normally present in prostatic secretion. Macrophages respond, followed by recruitment of T-lymphocytes which participate in the inflammatory response and accumulate around the damaged glands. B-cell activity appears to be a late event.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2019
Abstract A hybrid detector telescope has been developed for simultaneous detection of a wide rang... more Abstract A hybrid detector telescope has been developed for simultaneous detection of a wide range of charged particles from Z = 1 to fission fragments (FFs). The telescope consists of two detection mediums, namely, gas-ionization chamber and CsI(Tl) crystals, enabling three stages of particle identification (PI). The gas-ionization chamber is segmented longitudinally into two parts in order to separate heavier FFs from other reaction products. The characteristics of the ionization chamber were obtained using 252Cf spontaneous fission source. The PI capabilities of the telescope has been demonstrated through in-beam measurements in 12 , 13 C + 232Th fission reactions. The potential advantage of such a hybrid detector telescope to measure the yield of light charged particles which are emitted along the direction of fission fragments, has been established. The details of the design aspects, its characteristic performance, and the results from in-beam measurements are presented in this article.
alpha-particle evaporation spectra and gamma-ray multiplicities were measured for various target-... more alpha-particle evaporation spectra and gamma-ray multiplicities were measured for various target-projectile systems corresponding to residual nuclei in the range of ZR=48-55 and with excitation energy in the range of 30-40 MeV. The high-energy part of the evaporation spectra were analyzed using the statistical model code PACE2 to derive values of the inverse level-density parameter (K). The K values were found
... in the following way. The electronic pulser signal was fed to the pre-amplifier followed by t... more ... in the following way. The electronic pulser signal was fed to the pre-amplifier followed by the electronics and data acqui-sition system and, at the same time, the samesignal was also fed to a counter module. The ratio of the ...
Inflammation is a common finding in benign prostatic hyperplasia (BPH) and may be classified as a... more Inflammation is a common finding in benign prostatic hyperplasia (BPH) and may be classified as acute, chronic active or chronic inactive prostatitis. The aim of the present study was to localise the different types of inflammatory cells in prostatic lesions to determine the sequence of events in the cellular reaction. We have carried out immunohistological characterisation of the inflammatory cells, using CD45RO and CD3 antibodies to detect T-lymphocytes, CD20 antibodies to detect B-lymphocytes, CD68 to detect macrophages, kappa and lambda immunoglobulin light chains, and antibodies against prostate specific antigen (PSA) and prostate specific acid phosphatase (PSAP). Macrophages accumulated in the lumen and glandular epithelial layers of damaged prostatic glands and were found in the periglandular cuff of inflammatory cells in acute and chronic active prostatitis. Lymphocytes also accumulated in large numbers in the glandular epithelial layers and around the glands, indicating an association with macrophages. B-lymphocytes were scanty, if at all present, in acute and chronic active prostatitis, but were prominent within well-organised follicle centres in chronic active prostatitis. Cells positive for light chains were few and scattered in prostatic tissue. PSA and PSAP activity was lost in recently damaged prostatic glandular epithelium and reappeared only in regenerating secretory epithelium, indicating leakage as a result of damage. We suggest that the initial response to prostatic injury is cellular, and probably related to leakage into the periglandular tissues of PSA, PSAP and other antigenic molecules normally present in prostatic secretion. Macrophages respond, followed by recruitment of T-lymphocytes which participate in the inflammatory response and accumulate around the damaged glands. B-cell activity appears to be a late event.
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