NAME OR DESIGNATION OF PROGRAM, COMPUTER, DESCRIPTION OF PROGRAM OR FUNCTION, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHORS, MATERIAL, CATEGORIES

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Program name | Package id | Status | Status date |
---|---|---|---|

CFUP1 | IAEA1266/01 | Arrived | 12-APR-2001 |

Machines used:

Package ID | Orig. computer | Test computer |
---|---|---|

IAEA1266/01 | FACOM M-340-S |

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3. DESCRIPTION OF PROGRAM OR FUNCTION

CFUP1 is a program for calculating the neutron or charged particles (p, d, t, He3, alpha) induced reactions of fissile nuclei in the incident energy range up to 33 MeV.

CFUP1 has been developed within the framework of the optical model, preequilibrium (PE) statistical theory based on the exciton model, and the evaporation model. In the first, second, and third particle emitting processes, we consider preequilibrium emission and evaporation, in the fourth and fifth particle emitting processes, we only consider evaporation. In the evaporation model, the fission probability of the compound nucleus is calculated by the effect of the single peak fission barrier formula. For composite particle emission, the pick-up mechanism of cluster formation was used in the first particle emitting process.

In the energy range up to 33 MeV, CFUP1 can give the calculated results for optical model quantities and many kinds of cross sections in first, second, third, fourth, and fifth particle emitting processes as well as secondary particle and fission neutron energy spectra.

The output data of CFUP1 include:

1) The cross sections and nu values:

tot (only for neutron as projectile), el (only for neutron as projectile), non, (x,gamma), (x,n), (x,2n), (x,3n), (x,4n), (x,5n), (x,np), (x,p), (x,d), (x,t), (x,He3), (x,alpha), (x,f), (x,n'f), (x,2nf), (x,3nf), (x,4nf), (x,pf), (x,f) (total fission cross section).

The nu values of various fission processes are also given.

2) The elastic scattering angular distributions and the ratios of the elastic scattering differential cross section to Rutherford scattering differential cross section.

3) The energy spectra of all secondary particles in one- to five- particle emission processes and the fission neutron spectra of various fission processes.

CFUP1 is a program for calculating the neutron or charged particles (p, d, t, He3, alpha) induced reactions of fissile nuclei in the incident energy range up to 33 MeV.

CFUP1 has been developed within the framework of the optical model, preequilibrium (PE) statistical theory based on the exciton model, and the evaporation model. In the first, second, and third particle emitting processes, we consider preequilibrium emission and evaporation, in the fourth and fifth particle emitting processes, we only consider evaporation. In the evaporation model, the fission probability of the compound nucleus is calculated by the effect of the single peak fission barrier formula. For composite particle emission, the pick-up mechanism of cluster formation was used in the first particle emitting process.

In the energy range up to 33 MeV, CFUP1 can give the calculated results for optical model quantities and many kinds of cross sections in first, second, third, fourth, and fifth particle emitting processes as well as secondary particle and fission neutron energy spectra.

The output data of CFUP1 include:

1) The cross sections and nu values:

tot (only for neutron as projectile), el (only for neutron as projectile), non, (x,gamma), (x,n), (x,2n), (x,3n), (x,4n), (x,5n), (x,np), (x,p), (x,d), (x,t), (x,He3), (x,alpha), (x,f), (x,n'f), (x,2nf), (x,3nf), (x,4nf), (x,pf), (x,f) (total fission cross section).

The nu values of various fission processes are also given.

2) The elastic scattering angular distributions and the ratios of the elastic scattering differential cross section to Rutherford scattering differential cross section.

3) The energy spectra of all secondary particles in one- to five- particle emission processes and the fission neutron spectra of various fission processes.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

1) The calculations are restricted to the fissile nuclei.

2) The incident particle is restricted to n(neutron), p(proton), d(deuteron), alpha(helium-4), t(triton), and He3(helium-3).

3) The energy range of the incident particle is restricted to below 33 MeV. In this region the maximum number of energy points is 40.

4) The maximum number of energy points in emitting particle spectra is 100.

1) The calculations are restricted to the fissile nuclei.

2) The incident particle is restricted to n(neutron), p(proton), d(deuteron), alpha(helium-4), t(triton), and He3(helium-3).

3) The energy range of the incident particle is restricted to below 33 MeV. In this region the maximum number of energy points is 40.

4) The maximum number of energy points in emitting particle spectra is 100.

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6. TYPICAL RUNNING TIME

The running time depends on the number of energy points for the calculation of cross sections and energy spectra, respectively. For example, calculation of all reaction cross sections in 29 incident energy points (5 to 33 MeV) and of energy spectra at 3 energy points (9 MeV, 26 MeV, and 33 MeV) for target nucleus U-235 with proton as incoming particle takes 74 minutes CPU time on a MICROVAX-II computer.

The running time depends on the number of energy points for the calculation of cross sections and energy spectra, respectively. For example, calculation of all reaction cross sections in 29 incident energy points (5 to 33 MeV) and of energy spectra at 3 energy points (9 MeV, 26 MeV, and 33 MeV) for target nucleus U-235 with proton as incoming particle takes 74 minutes CPU time on a MICROVAX-II computer.

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10. REFERENCES

- M. Bohning:

Nucl. Phys., A152, 529(1970).

- F.C. Williams:

Nucl. Phys., A166, 231(1971).

- C. Kalbach:

in Proc. IAEA Advisory Group Meeting on Basic and Applied Problem

of Nuclear Level Densities

FS M.R. Bhat (Ed.), report BNL-NCS-51694 (Brookhaven National

Laboratory, 1983) p. 113.

- Zhang Jing-Shang and Yang Xian-Jun:

High Energy Physics and Nuclear Physics (China), 13, 822 (1989).

- R.J. Howerton:

Nucl. Sci. Eng., 62, 438(1977).

- A. Iwamoto and K. Harada:

Phys. Rev, C26, 1821(1982).

- K. Sato, A. Iwamoto and K. Harada:

Phys. Rev, C28, 1527(1983).

- Zhang Jing-Shang, Wen Yuan-Qi, Wang Shu-Nuan and Shi Xiang-Jun:

Commun. in Theor. Phys., (Beijing, China), 10, 33(1988).

- A. Gilbert and C.G.W. Cameron:

Can. J. Phys., 43, 1446(1965).

- F.D. Becchetti and G.W. Greenlees:

Phys. Rev., 182, 1190(1969).

- C.M. Perey et al.:

Atomic Data and Nuclear Data Tables, 17, 3(1976).

- Shen Qingbiao et al.:

Nuclear Data for Science and Technology, Proc. Int. Conf.,

Antwerp, 6-10 Sep., p. 565 (1982).

- R.L. Varner et al.:

Phys. Lett., B15, 6(1987).

- A.R. Barnett et al.:

Computer Phys. Commun., 8, 377(1974).

- M. Bohning:

Nucl. Phys., A152, 529(1970).

- F.C. Williams:

Nucl. Phys., A166, 231(1971).

- C. Kalbach:

in Proc. IAEA Advisory Group Meeting on Basic and Applied Problem

of Nuclear Level Densities

FS M.R. Bhat (Ed.), report BNL-NCS-51694 (Brookhaven National

Laboratory, 1983) p. 113.

- Zhang Jing-Shang and Yang Xian-Jun:

High Energy Physics and Nuclear Physics (China), 13, 822 (1989).

- R.J. Howerton:

Nucl. Sci. Eng., 62, 438(1977).

- A. Iwamoto and K. Harada:

Phys. Rev, C26, 1821(1982).

- K. Sato, A. Iwamoto and K. Harada:

Phys. Rev, C28, 1527(1983).

- Zhang Jing-Shang, Wen Yuan-Qi, Wang Shu-Nuan and Shi Xiang-Jun:

Commun. in Theor. Phys., (Beijing, China), 10, 33(1988).

- A. Gilbert and C.G.W. Cameron:

Can. J. Phys., 43, 1446(1965).

- F.D. Becchetti and G.W. Greenlees:

Phys. Rev., 182, 1190(1969).

- C.M. Perey et al.:

Atomic Data and Nuclear Data Tables, 17, 3(1976).

- Shen Qingbiao et al.:

Nuclear Data for Science and Technology, Proc. Int. Conf.,

Antwerp, 6-10 Sep., p. 565 (1982).

- R.L. Varner et al.:

Phys. Lett., B15, 6(1987).

- A.R. Barnett et al.:

Computer Phys. Commun., 8, 377(1974).

IAEA1266/01, included references:

- Cai Chong-Hai and Shen Qing-Biao:The User's Manual for Program CFUP1

- Zhuang Youxiang and Sun Zuxun:

Communication of Nuclear Data Progress

III Data Evaluation - Techniques used for Charged Particle Nuclear

Data Evaluation at CNDC

CNDC-0012, No.9, pp. 33-42 (1993).

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IAEA1266/01

source program mag tapeCFUP1 Source Program SRCTPtest-case data mag tapeCFUP1 Input Data DATTP

test-case output mag tapeCFUP1 Output Data OUTTP

miscellaneous mag tapeCFUP1 Abstract File MISTP

report User's Manual for Program CFUP1 REPPT

report CNDC-0012, No.9, pp.33-42 (1993) REPPT

Keywords: charged particles, cross sections, emission spectra, evaporation model, fission spectra, optical models, precompound-nucleus emission.