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| ENTRY C2829 20221004 20230626 20230623 C224 | ||
| SUBENT C2829001 20221004 20230626 20230623 C224 | ||
| BIB 10 25 | ||
| TITLE Total Interaction Cross Section of Hydrogen for | ||
| Positive and Negative 200-700 Mev Pions | ||
| AUTHOR (L.C.L.Yuan,S.J.Lindenbaum) | ||
| REFERENCE (J,PR,93,917(F5),1954) | ||
| #doi:10.1103/PhysRev.93.909 | ||
| INSTITUTE (1USABNL) | ||
| FACILITY (SYNCH,1USABNL) Cosmotron. | ||
| DETECTOR (TELES,SCIN) A fast triple coincident scintillation | ||
| counter telescope. | ||
| METHOD (COINC) Measurements of the total interaction cross | ||
| section of hydrogen for positive and negative pions | ||
| of several energies have been made. A direct meson | ||
| beam from the Brookhaven Cosmotron was incident upon | ||
| a fast triple coincident scintillation counter | ||
| telescope containing an analyzing magnet arranged to | ||
| select either negative or positive particles of the | ||
| required momentum. A large liquid scintillation | ||
| counter was placed behind the third counter in | ||
| quadruple coincidence with the monitor telescope. | ||
| Good geometry attenuation measurements were made for | ||
| both polyethylene and carbon absorbers placed between | ||
| the third and fourth counters. | ||
| ERR-ANALYS (DATA-ERR) No details on sources of uncertainties. | ||
| STATUS (TABLE) Table I, page 918 of J,PR,93,918(F5),1954. | ||
| HISTORY (20221004C) BP | ||
| ENDBIB 25 | ||
| NOCOMMON 0 0 | ||
| ENDSUBENT 28 | ||
| SUBENT C2829002 20221004 20230626 20230623 C224 | ||
| BIB 1 1 | ||
| REACTION (1-H-1(PIP,NON),,SIG) | ||
| ENDBIB 1 | ||
| NOCOMMON 0 0 | ||
| DATA 3 2 | ||
| EN DATA DATA-ERR | ||
| MEV MB MB | ||
| 340.0 48.0 9.0 | ||
| 450.0 28.0 6.0 | ||
| ENDDATA 4 | ||
| ENDSUBENT 10 | ||
| SUBENT C2829003 20221004 20230626 20230623 C224 | ||
| BIB 1 1 | ||
| REACTION (1-H-1(PIN,NON),,SIG) | ||
| ENDBIB 1 | ||
| NOCOMMON 0 0 | ||
| DATA 3 3 | ||
| EN DATA DATA-ERR | ||
| MEV MB MB | ||
| 265.0 56.0 16.0 | ||
| 340.0 21.0 11.0 | ||
| 450.0 25.0 3.0 | ||
| ENDDATA 5 | ||
| ENDSUBENT 11 | ||
| ENDENTRY 3 |
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| ENTRY C2830 20221004 20230626 20230623 C224 | ||
| SUBENT C2830001 20221004 20230626 20230623 C224 | ||
| BIB 11 12 | ||
| TITLE Scattering of Negative Pions by Deuterium | ||
| AUTHOR (D.E.Nagle) | ||
| REFERENCE (J,PR,93,918(F10),1954) | ||
| #doi:10.1103/PhysRev.93.909 | ||
| REL-REF (A,C2635001,H.L.Anderson+,J,PR,91,155,1953) | ||
| INSTITUTE (1USACHI) | ||
| FACILITY (SYNCY,1USACHI) The Chicago synchrocyclotron. | ||
| DETECTOR (TELES,SCIN) | ||
| SAMPLE Liquid deuterium. | ||
| ERR-ANALYS (DATA-ERR) No details on sources of uncertainties. | ||
| STATUS (TABLE) page 918 of J,PR,93,918(F10),1954. | ||
| HISTORY (20221004C) BP | ||
| ENDBIB 12 | ||
| COMMON 1 3 | ||
| EN | ||
| MEV | ||
| 123.0 | ||
| ENDCOMMON 3 | ||
| ENDSUBENT 19 | ||
| SUBENT C2830002 20221004 20230626 20230623 C224 | ||
| BIB 1 1 | ||
| REACTION (1-H-2(PIN,EL)1-H-2,,DA) | ||
| ENDBIB 1 | ||
| NOCOMMON 0 0 | ||
| DATA 3 3 | ||
| ANG DATA DATA-ERR | ||
| ADEG MB/SR MB/SR | ||
| 45.0 6.63 0.60 | ||
| 90.0 5.05 0.40 | ||
| 135.0 7.33 0.50 | ||
| ENDDATA 5 | ||
| ENDSUBENT 11 | ||
| SUBENT C2830003 20221004 20230626 20230623 C224 | ||
| BIB 2 4 | ||
| REACTION (1-H-2(PIN,X)1-H-1,,DA) | ||
| COMMENT Compiler's comment: The text talks about | ||
| "production of photons". This may be a misprint and | ||
| should read "protons". | ||
| ENDBIB 4 | ||
| NOCOMMON 0 0 | ||
| DATA 3 3 | ||
| ANG DATA DATA-ERR | ||
| ADEG MB/SR MB/SR | ||
| 45.0 2.39 0.3 | ||
| 90.0 2.30 0.2 | ||
| 135.0 3.14 0.4 | ||
| ENDDATA 5 | ||
| ENDSUBENT 14 | ||
| ENDENTRY 3 |
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| ENTRY C2831 20221004 20230626 20230623 C224 | ||
| SUBENT C2831001 20221004 20230626 20230623 C224 | ||
| BIB 11 35 | ||
| TITLE P-P Differential Elastic Scattering Cross Sections at | ||
| 144, 271, and 429 Mev | ||
| AUTHOR (V.A.Nedzel,J.Marshall, L.Marshall) | ||
| REFERENCE (J,PR,93,927(M1),1954) | ||
| #doi:10.1103/PhysRev.93.909 | ||
| INSTITUTE (1USACHI) | ||
| FACILITY (SYNCY,1USACHI) The Chicago synchrocyclotron. | ||
| DETECTOR (TELES,SCIN) Five scintillation counters. | ||
| SAMPLE The scatterer was a 4-in. vertical cylinder of liquid | ||
| hydrogen contained in styrofoam walls. | ||
| METHOD (COINC) The p-p differential elastic scattering cross | ||
| section at 90 degree baricentral angle has been | ||
| measured for three proton energies and has been found | ||
| to be independent of energy in this range. Sizable | ||
| intensities of proton beams of a wide range in energy | ||
| were obtained by the proper azimuthal positioning of | ||
| a beryllium scattering target at 76 in. radius in the | ||
| Chicago synchrocyclotron. The protons collimated by a | ||
| channel in the heavy shield were of definite energy | ||
| for a given target position. They were further | ||
| analyzed by an additional magnet. The analyzed | ||
| collimated beam was defined and measured before the | ||
| scatterer by a telescope of 2 scintillation counters | ||
| (1-2). Two scintillation counters (3 and 4) were | ||
| placed on opposite sides of the beam, connected in | ||
| coincidence with counters 1 and 2 in such a way that | ||
| they counted the two elastically scattered protons in | ||
| coincidence with the incident proton. | ||
| ERR-ANALYS (DATA-ERR) No details on sources of uncertainties. | ||
| CORRECTION In order to avoid counting loss corrections, a fifth | ||
| counter which counted protons scattered out of the | ||
| main beam was used to normalize the incident flux at | ||
| low-beam intensities and to normalize the quadruple | ||
| coincidence rate at high beam intensity. | ||
| HISTORY (20221004C) BP | ||
| ENDBIB 35 | ||
| COMMON 1 3 | ||
| ANG | ||
| ADEG | ||
| 90.0 | ||
| ENDCOMMON 3 | ||
| ENDSUBENT 42 | ||
| SUBENT C2831002 20221004 20230626 20230623 C224 | ||
| BIB 2 2 | ||
| REACTION (1-H-1(P,EL)1-H-1,,DA) | ||
| STATUS (TABLE) page 927 of J,PR,93,927(M1),1954. | ||
| ENDBIB 2 | ||
| NOCOMMON 0 0 | ||
| DATA 3 3 | ||
| EN DATA DATA-ERR | ||
| MEV MB/SR MB/SR | ||
| 144.0 3.21 0.11 | ||
| 271.0 3.67 0.34 | ||
| 429.0 3.42 0.13 | ||
| ENDDATA 5 | ||
| ENDSUBENT 12 | ||
| ENDENTRY 2 |
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| @@ -0,0 +1,92 @@ | ||
| ENTRY C2832 20221004 20230626 20230623 C224 | ||
| SUBENT C2832001 20221004 20230626 20230623 C224 | ||
| BIB 8 9 | ||
| TITLE P-P Elastic Scattering and Pion Production at 419 Mev | ||
| AUTHOR (J.Marshall, L.Marshall,V.A.Nedzel) | ||
| REFERENCE (J,PR,93,927(M2),1954) | ||
| #doi:10.1103/PhysRev.93.909 | ||
| INSTITUTE (1USACHI) | ||
| FACILITY (SYNCY,1USACHI) The Chicago synchrocyclotron. | ||
| ERR-ANALYS (DATA-ERR) No details on sources of uncertainties. | ||
| STATUS (TABLE) page 927 of J,PR,93,927(M2),1954. | ||
| HISTORY (20221004C) BP | ||
| ENDBIB 9 | ||
| COMMON 1 3 | ||
| EN | ||
| MEV | ||
| 419.0 | ||
| ENDCOMMON 3 | ||
| ENDSUBENT 16 | ||
| SUBENT C2832002 20221004 20230626 20230623 C224 | ||
| BIB 2 6 | ||
| REACTION (1-H-1(P,EL)1-H-1,,DA) | ||
| METHOD The differential p-p elastic scattering cross section | ||
| at 419 MEV was measured from 90 to 54 degrees | ||
| baricentral angle by the method in which the two | ||
| elastically scattered protons were detected in | ||
| coincidence with the incident proton. | ||
| ENDBIB 6 | ||
| NOCOMMON 0 0 | ||
| DATA 3 4 | ||
| ANG DATA DATA-ERR | ||
| ADEG MB/SR MB/SR | ||
| 54.0 2.84 0.12 | ||
| 65.0 3.11 0.19 | ||
| 80.0 3.51 0.23 | ||
| 90.0 3.42 0.13 | ||
| ENDDATA 6 | ||
| ENDSUBENT 17 | ||
| SUBENT C2832003 20221004 20230626 20230623 C224 | ||
| BIB 2 13 | ||
| REACTION (1-H-1(P,EL)1-H-1,,DA) | ||
| METHOD From 54 to 28 degrees a second method was used which | ||
| counted all charged particles scattered at the angle | ||
| in question in coincidence with an incident proton | ||
| provided that no charged particle was simultaneously | ||
| scattered near the forward direction. This method | ||
| depended on several facts. First, the only reaction | ||
| which seriously interferes with detection of | ||
| scattered protons is (a) p+p->pi+ + D. The related | ||
| reaction (b) P+P->pi+ + P+N probably occurs less than | ||
| 1/5th as frequently. In the case of (a) all deuterons | ||
| and in the case of (b) many protons are scattered | ||
| forward close to the beam. | ||
| ENDBIB 13 | ||
| NOCOMMON 0 0 | ||
| DATA 3 3 | ||
| ANG DATA DATA-ERR | ||
| ADEG MB/SR MB/SR | ||
| 28.0 2.86 0.20 | ||
| 43.0 3.18 0.21 | ||
| 54.0 2.80 0.21 | ||
| ENDDATA 5 | ||
| ENDSUBENT 23 | ||
| SUBENT C2832004 20221004 20230626 20230623 C224 | ||
| BIB 2 18 | ||
| REACTION (1-H-1(P,X)1-PP-0,,DA) | ||
| METHOD From 54 to 28 degrees a second method was used which | ||
| counted all charged particles scattered at the angle | ||
| in question in coincidence with an incident proton | ||
| provided that no charged particle was simultaneously | ||
| scattered near the forward direction. This method | ||
| depended on several facts. First, the only reaction | ||
| which seriously interferes with detection of | ||
| scattered protons is (a) P+P->pi+ + D. The related | ||
| reaction (b) P+P->pi+ + P+N probably occurs less than | ||
| 1/5th as frequently. In the case of (a) all deuterons | ||
| and in the case of (b) many protons are scattered | ||
| forward close to the beam. In a reversal of this | ||
| method the pi+ production cross section at 45 | ||
| laboratory angle was measured by counting charged | ||
| particles scattered in coincidence with an incident | ||
| proton and with a charged particle scattered | ||
| simultaneously near the forward direction. | ||
| ENDBIB 18 | ||
| NOCOMMON 0 0 | ||
| DATA 3 1 | ||
| ANG DATA DATA-ERR | ||
| ADEG MB/SR MB/SR | ||
| 80.0 0.163 0.024 | ||
| ENDDATA 3 | ||
| ENDSUBENT 26 | ||
| ENDENTRY 4 |
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| ENTRY C2836 20221021 20230626 20230623 C224 | ||
| SUBENT C2836001 20221021 20230626 20230623 C224 | ||
| BIB 11 44 | ||
| TITLE Cyclotron Targets: Preparation and Radiochemical | ||
| Separation. III. Na22 | ||
| AUTHOR (J.W.Irvine Jr,E.T.Clarke) | ||
| REFERENCE (J,JCP,16,686,1948) | ||
| #doi:10.1063/1.1746975 | ||
| INSTITUTE (1USAMIT) | ||
| FACILITY (CYCLO,1USAMIT) | ||
| DETECTOR (PROPC) Gamma-ray activities from the Na24 generated | ||
| in the individual foils were measured on a calibrated | ||
| platinum screen wall counter shielded with 1/16" lead, | ||
| and compared with a 10-microgram radium standard to | ||
| obtain the absolute disintegration rates. Decays of | ||
| several foils were also followed for a few days as a | ||
| check on the identity of the activity. The Na22 | ||
| positrons in the foils were measured with a bell-type | ||
| thin window counter after the shorter-lived component | ||
| had died away. | ||
| SAMPLE The magnesium disks, because of their fragility, were | ||
| sealed between layers of aluminum foil (0.00025") and | ||
| stacked, resulting in a series of 24 absorbers whose | ||
| average individual thickness was 7.7 mg/cm2 and whose | ||
| total thickness, 185 mg/cm2, was approximately equal to | ||
| the distance of penetration of the 14-MeV deuterons | ||
| used. | ||
| METHOD (CHSEP,STTA,ACTIV) The stack of foils was bombarded | ||
| for 1.5 hours, 47.5-microampere minutes, with a | ||
| deuteron beam whose initial energy was 14.20 MeV | ||
| (range 184.5 mg/cm2 Al). After bombardment the | ||
| targets should be allowed to age for about a week to | ||
| allow the Na24 to decay, thus reducing the radiation | ||
| hazard. The aged target is weighed and dissolved in | ||
| 50 percent excess of glacial acetic acid. With the | ||
| metal the reaction is slow in starting but becomes | ||
| very vigorous as it proceeds. After the reaction | ||
| subsides, the solution is diluted with an equal | ||
| volume of 50 percent alcohol. The last traces of | ||
| metal are dissolved after 15-30 minutes. If any | ||
| insoluble residue remains, it is removed by filtration. | ||
| ERR-ANALYS (ERR-1) Even though individual thicknesses | ||
| varied as much as 20 percent, the data could be | ||
| corrected for these variations to reduce errors from | ||
| this source to about 2 percent. | ||
| CORRECTION Target thickness corrections. | ||
| HISTORY (20221021C) BP | ||
| ENDBIB 44 | ||
| COMMON 1 3 | ||
| ERR-1 | ||
| PER-CENT | ||
| 2.0 | ||
| ENDCOMMON 3 | ||
| ENDSUBENT 51 | ||
| SUBENT C2836002 20221021 20230626 20230623 C224 | ||
| BIB 3 3 | ||
| REACTION (12-MG-24(D,A)11-NA-22,,SIG) | ||
| DECAY-DATA (11-NA-22,3.0YR) | ||
| STATUS (CURVE) Fig. 1, page 688 of J,JCP,16,686,1948. | ||
| ENDBIB 3 | ||
| NOCOMMON 0 0 | ||
| DATA 2 23 | ||
| EN DATA | ||
| MEV B | ||
| 2.601 0.005 | ||
| 3.582 0.021 | ||
| 4.415 0.048 | ||
| 5.162 0.074 | ||
| 5.845 0.102 | ||
| 6.506 0.122 | ||
| 7.061 0.134 | ||
| 7.659 0.146 | ||
| 8.192 0.148 | ||
| 8.704 0.151 | ||
| 9.238 0.157 | ||
| 9.665 0.160 | ||
| 10.134 0.156 | ||
| 10.518 0.150 | ||
| 10.988 0.145 | ||
| 11.415 0.140 | ||
| 11.820 0.133 | ||
| 12.204 0.131 | ||
| 12.610 0.126 | ||
| 12.973 0.119 | ||
| 13.314 0.111 | ||
| 13.698 0.106 | ||
| 14.040 0.100 | ||
| ENDDATA 25 | ||
| ENDSUBENT 33 | ||
| SUBENT C2836003 20221021 20230626 20230623 C224 | ||
| BIB 4 4 | ||
| REACTION (12-MG-26(D,A)11-NA-24,,SIG) | ||
| REL-REF (A,C2841002,M.C.Henderson,J,PR,48,855,1935) | ||
| DECAY-DATA (11-NA-24,14.8HR) | ||
| STATUS (CURVE) Fig. 1, page 688 of J,JCP,16,686,1948. | ||
| ENDBIB 4 | ||
| NOCOMMON 0 0 | ||
| DATA 2 23 | ||
| EN DATA | ||
| MEV B | ||
| 2.579 0.005 | ||
| 3.582 0.021 | ||
| 4.415 0.039 | ||
| 5.119 0.054 | ||
| 5.887 0.070 | ||
| 6.527 0.079 | ||
| 7.104 0.082 | ||
| 7.701 0.090 | ||
| 8.213 0.096 | ||
| 8.726 0.093 | ||
| 9.216 0.093 | ||
| 9.686 0.092 | ||
| 10.155 0.087 | ||
| 10.518 0.084 | ||
| 11.009 0.079 | ||
| 11.436 0.077 | ||
| 11.863 0.070 | ||
| 12.226 0.068 | ||
| 12.610 0.064 | ||
| 12.994 0.064 | ||
| 13.335 0.060 | ||
| 13.698 0.054 | ||
| 14.040 0.052 | ||
| ENDDATA 25 | ||
| ENDSUBENT 34 | ||
| ENDENTRY 3 |
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